diff --git a/.gitattributes b/.gitattributes
index 55cab133643a2a73e083373d2106533678d0edd5..258fd82ffca4ac5b7b0c68ce61fdb56f83d4b827 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -56,3 +56,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+visualizer/static/resources/envmap.hdr filter=lfs diff=lfs merge=lfs -text
diff --git a/metadata.json b/metadata.json
new file mode 100644
index 0000000000000000000000000000000000000000..dfcd355c67d2bae5246a9db0565813b59fc4924a
--- /dev/null
+++ b/metadata.json
@@ -0,0 +1,920 @@
+[
+  {
+    "name": "Concerto in D Minor, BWV 1052: I. Allegro",
+    "composer": "J.S. Bach",
+    "piece_id": 0,
+    "subject_id": 0
+  },
+  {
+    "name": "Italian Concerto, BWV 971: I. Allegro",
+    "composer": "J.S. Bach",
+    "piece_id": 1,
+    "subject_id": 0
+  },
+  {
+    "name": "Preludes and Fugue in F Minor, BWV 881",
+    "composer": "J.S. Bach",
+    "piece_id": 2,
+    "subject_id": 0
+  },
+  {
+    "name": "English Suite no 6 in D minor, BWV 811, Gavotte",
+    "composer": "J.S. Bach",
+    "piece_id": 3,
+    "subject_id": 0
+  },
+  {
+    "name": "Concerto in D Minor, BWV 1052: III. Allegro",
+    "composer": "J.S. Bach",
+    "piece_id": 4,
+    "subject_id": 0
+  },
+  {
+    "name": "Concerto No. 5 in E-Flat Major, Op. 73: I. Allegro (excerpt)",
+    "composer": "Ludwig van Beethoven",
+    "piece_id": 5,
+    "subject_id": 0
+  },
+  {
+    "name": "Miroirs: III. Une Barque sur l’Océan",
+    "composer": "Maurice Ravel",
+    "piece_id": 6,
+    "subject_id": 0
+  },
+  {
+    "name": "All Blues",
+    "composer": "Miles Davis ",
+    "piece_id": 7,
+    "subject_id": 0
+  },
+  {
+    "name": "Slow Boat to China",
+    "composer": "Other",
+    "piece_id": 8,
+    "subject_id": 0
+  },
+  {
+    "name": "Black Pearl",
+    "composer": "Stephen Prutsman",
+    "piece_id": 9,
+    "subject_id": 0
+  },
+  {
+    "name": "Bewitched Bothered and Bewildered",
+    "composer": "Other",
+    "piece_id": 10,
+    "subject_id": 0
+  },
+  {
+    "name": "What is this thing called love",
+    "composer": "Other",
+    "piece_id": 11,
+    "subject_id": 0
+  },
+  {
+    "name": "Prelude in C Sharp Major, BWV 872",
+    "composer": "J.S. Bach",
+    "piece_id": 12,
+    "subject_id": 0
+  },
+  {
+    "name": "Going up Yonder Improvisation",
+    "composer": "Stephen Prutsman",
+    "piece_id": 13,
+    "subject_id": 0
+  },
+  {
+    "name": "Chopin Freddie",
+    "composer": "Stephen Prutsman",
+    "piece_id": 14,
+    "subject_id": 0
+  },
+  {
+    "name": "Ah, vous dirai-je, maman Variations, K. 265",
+    "composer": "Wolfgang Amadeus Mozart",
+    "piece_id": 15,
+    "subject_id": 1
+  },
+  {
+    "name": "Intermezzo in A Major, Op. 118, No. 2: Andante teneramente",
+    "composer": "Johannes Brahms",
+    "piece_id": 16,
+    "subject_id": 1
+  },
+  {
+    "name": "Ballade No. 3 in A-Flat Major, Op. 47",
+    "composer": "Frédéric Chopin",
+    "piece_id": 17,
+    "subject_id": 1
+  },
+  {
+    "name": "Sonata in B-Flat Major, K. 333: III. Allegretto grazioso",
+    "composer": "Wolfgang Amadeus Mozart",
+    "piece_id": 18,
+    "subject_id": 1
+  },
+  {
+    "name": "Novellette No. 1 in F Major, Op. 21",
+    "composer": "Robert Schumann",
+    "piece_id": 19,
+    "subject_id": 1
+  },
+  {
+    "name": "Sonata in B-Flat Major, K. 333: I. Allegro",
+    "composer": "Wolfgang Amadeus Mozart",
+    "piece_id": 20,
+    "subject_id": 1
+  },
+  {
+    "name": "Sonata in C Major, Op. 2, No. 3: I. Allegro con brio",
+    "composer": "Ludwig van Beethoven",
+    "piece_id": 21,
+    "subject_id": 1
+  },
+  {
+    "name": "Waltz in A-Flat Major, Op. 34, No. 1",
+    "composer": "Frédéric Chopin",
+    "piece_id": 22,
+    "subject_id": 1
+  },
+  {
+    "name": "Scales",
+    "composer": "Others",
+    "piece_id": 23,
+    "subject_id": 2
+  },
+  {
+    "name": "Pictures at an Exhibition, Mvt. 1: Promenade",
+    "composer": "Modest Mussorgsky",
+    "piece_id": 24,
+    "subject_id": 2
+  },
+  {
+    "name": "Concerto No. 5 in F Major, Op. 103, \"Egyptian\": I. Allegro animato",
+    "composer": "Camille Saint-Saëns",
+    "piece_id": 25,
+    "subject_id": 2
+  },
+  {
+    "name": "Concerto No. 5 in F Major, Op. 103, \"Egyptian\": II. Andante",
+    "composer": "Camille Saint-Saëns",
+    "piece_id": 26,
+    "subject_id": 2
+  },
+  {
+    "name": "Concerto No. 5 in F Major, Op. 103, \"Egyptian\": III. Molto Allegro",
+    "composer": "Camille Saint-Saëns",
+    "piece_id": 27,
+    "subject_id": 2
+  },
+  {
+    "name": "Pictures at an Exhibition, Mvt. 10: The Great Gate of Kiev",
+    "composer": "Modest Mussorgsky",
+    "piece_id": 28,
+    "subject_id": 2
+  },
+  {
+    "name": "Theme and Var 1-6 from Johannes Brahms Variations",
+    "composer": "Johannes Brahms",
+    "piece_id": 29,
+    "subject_id": 2
+  },
+  {
+    "name": "Concerto in D Minor, BWV 974: II. Adagio",
+    "composer": "J.S. Bach",
+    "piece_id": 30,
+    "subject_id": 3
+  },
+  {
+    "name": "Barcarolle in G minor, Op. 10, No. 3",
+    "composer": "Sergei Rachmaninoff",
+    "piece_id": 31,
+    "subject_id": 3
+  },
+  {
+    "name": "Nocturne in D-flat major, Op. 27, No. 2",
+    "composer": "Frédéric Chopin",
+    "piece_id": 32,
+    "subject_id": 3
+  },
+  {
+    "name": "Fantaisie-Impromptu in C-Sharp Minor, Op. 66",
+    "composer": "Frédéric Chopin",
+    "piece_id": 33,
+    "subject_id": 3
+  },
+  {
+    "name": "Piano Trio No. 7 in B-Flat Major, Op. 11, \"Gassenhauer\": I. Allegro con brio",
+    "composer": "Ludwig van Beethoven",
+    "piece_id": 34,
+    "subject_id": 4
+  },
+  {
+    "name": "Sonata No. 3 in B Minor, Op. 58: IV. Finale: Presto, non tanto",
+    "composer": "Frédéric Chopin",
+    "piece_id": 35,
+    "subject_id": 4
+  },
+  {
+    "name": "Trois Chanson de Bilitis",
+    "composer": "Claude Debussy",
+    "piece_id": 36,
+    "subject_id": 5
+  },
+  {
+    "name": "Die stille Stadt",
+    "composer": "Alma Mahler",
+    "piece_id": 37,
+    "subject_id": 5
+  },
+  {
+    "name": "Bei dir ist es traut",
+    "composer": "Alma Mahler",
+    "piece_id": 38,
+    "subject_id": 5
+  },
+  {
+    "name": "Laue Sommernacht",
+    "composer": "Alma Mahler",
+    "piece_id": 39,
+    "subject_id": 5
+  },
+  {
+    "name": "In meines Vaters Garten",
+    "composer": "Alma Mahler",
+    "piece_id": 40,
+    "subject_id": 5
+  },
+  {
+    "name": "Summer Hue",
+    "composer": "Jennifer Higdon",
+    "piece_id": 41,
+    "subject_id": 5
+  },
+  {
+    "name": " Ich atmet einen Lindenduft",
+    "composer": "Gustav Mahler",
+    "piece_id": 42,
+    "subject_id": 5
+  },
+  {
+    "name": "Expanse of my Soul",
+    "composer": "Scott Ordway",
+    "piece_id": 43,
+    "subject_id": 5
+  },
+  {
+    "name": "Not Everyone Thinks That I'm Beautiful",
+    "composer": "Michael Tilson Thomas",
+    "piece_id": 44,
+    "subject_id": 5
+  },
+  {
+    "name": "Grace",
+    "composer": "Michael Tilson Thomas",
+    "piece_id": 45,
+    "subject_id": 5
+  },
+  {
+    "name": "Scales",
+    "composer": "Others",
+    "piece_id": 46,
+    "subject_id": 6
+  },
+  {
+    "name": "Suite No. 5 in E Major: I. Prelude",
+    "composer": "George Frideric Handel",
+    "piece_id": 47,
+    "subject_id": 6
+  },
+  {
+    "name": "Suite No. 5 in E Major: II. Allemande",
+    "composer": "George Frideric Handel",
+    "piece_id": 48,
+    "subject_id": 6
+  },
+  {
+    "name": "Suite No. 5 in E Major: III. Courante",
+    "composer": "George Frideric Handel",
+    "piece_id": 49,
+    "subject_id": 6
+  },
+  {
+    "name": "Air \"The Harmonious Blacksmith\"",
+    "composer": "George Frideric Handel",
+    "piece_id": 50,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in C Major, Op. 28, No. 1, \"Agitato\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 51,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in A Minor, Op. 28, No. 2, \"Lento\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 52,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in G Major, Op. 28, No. 3, \"Vivace\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 53,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in E Minor, Op. 28, No. 4, \"Largo\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 54,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in D Major, Op. 28, No. 5, \"Allegro molto\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 55,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in B Minor, Op. 28, No. 6, \"Lento assai\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 56,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in A Major, Op. 28, No. 7, \"Andantino\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 57,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in F-Sharp Minor, Op. 28, No. 8, \"Molto agitato\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 58,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in E Major, Op. 28, No. 9, \"Largo\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 59,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in C-Sharp Minor, Op. 28, No. 10, \"Allegro molto\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 60,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in B Major, Op. 28, No. 11, \"Vivace\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 61,
+    "subject_id": 6
+  },
+  {
+    "name": "Prelude in G-Sharp Minor, Op. 28, No. 12, \"Presto\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 62,
+    "subject_id": 6
+  },
+  {
+    "name": "Andantino Cantabile",
+    "composer": "Leslie Adams",
+    "piece_id": 63,
+    "subject_id": 6
+  },
+  {
+    "name": "Clouds",
+    "composer": "Florence Price",
+    "piece_id": 64,
+    "subject_id": 6
+  },
+  {
+    "name": "Troubled Waters",
+    "composer": "Margaret Bonds",
+    "piece_id": 65,
+    "subject_id": 6
+  },
+  {
+    "name": "Twenty-six Etudes (2007) Part II: No. 10 Andantino Cantabile",
+    "composer": "H. Leslie Adams",
+    "piece_id": 66,
+    "subject_id": 6
+  },
+  {
+    "name": "Images, Book I: III. Mouvement",
+    "composer": "Claude Debussy",
+    "piece_id": 67,
+    "subject_id": 6
+  },
+  {
+    "name": "Mazurka in A Minor, Op. 59, No. 1",
+    "composer": "Frédéric Chopin",
+    "piece_id": 68,
+    "subject_id": 7
+  },
+  {
+    "name": "Prelude in D Minor, BWV 875",
+    "composer": "J.S. Bach",
+    "piece_id": 69,
+    "subject_id": 7
+  },
+  {
+    "name": "Andante Spianato ",
+    "composer": "Frédéric Chopin",
+    "piece_id": 70,
+    "subject_id": 7
+  },
+  {
+    "name": "Grande Polonaise Brilliante",
+    "composer": "Frédéric Chopin",
+    "piece_id": 71,
+    "subject_id": 7
+  },
+  {
+    "name": "Concerto No. 1 in E Minor, Op. 11: I. Allegro maestoso",
+    "composer": "Frédéric Chopin",
+    "piece_id": 72,
+    "subject_id": 7
+  },
+  {
+    "name": "Concerto No. 1 in E Minor, Op. 11: II. Romance - Larghetto",
+    "composer": "Frédéric Chopin",
+    "piece_id": 73,
+    "subject_id": 7
+  },
+  {
+    "name": "Concerto No. 1 in E Minor, Op. 11: III. Rondo - Vivace",
+    "composer": "Frédéric Chopin",
+    "piece_id": 74,
+    "subject_id": 7
+  },
+  {
+    "name": "Ballade No. 4 in F Minor, Op. 52",
+    "composer": "Frédéric Chopin",
+    "piece_id": 75,
+    "subject_id": 7
+  },
+  {
+    "name": "Fugue in D Minor, BWV 875",
+    "composer": "J.S. Bach",
+    "piece_id": 76,
+    "subject_id": 7
+  },
+  {
+    "name": "Étude in F Major, Op. 10, No. 8",
+    "composer": "Frédéric Chopin",
+    "piece_id": 77,
+    "subject_id": 7
+  },
+  {
+    "name": "Étude in G-Sharp Minor, Op. 25, No. 6",
+    "composer": "Frédéric Chopin",
+    "piece_id": 78,
+    "subject_id": 7
+  },
+  {
+    "name": "Étude in A-Flat Major, Op. 25, No. 1",
+    "composer": "Frédéric Chopin",
+    "piece_id": 79,
+    "subject_id": 8
+  },
+  {
+    "name": "Impromptu in G-Flat Major, Op. 90, No. 3, D. 899",
+    "composer": "Franz Schubert",
+    "piece_id": 80,
+    "subject_id": 8
+  },
+  {
+    "name": "Clair de Lune from Suite Bergamasque",
+    "composer": "Claude Debussy",
+    "piece_id": 81,
+    "subject_id": 8
+  },
+  {
+    "name": "Arabesque No. 1 in E Major",
+    "composer": "Claude Debussy",
+    "piece_id": 82,
+    "subject_id": 8
+  },
+  {
+    "name": "Prelude No. 8 \"On a Drop of Water\"",
+    "composer": "Federico Mompou",
+    "piece_id": 83,
+    "subject_id": 8
+  },
+  {
+    "name": "Excerpt of Nocturne for the Left Hand, Op. 9, No. 2",
+    "composer": "Alexander Scriabin",
+    "piece_id": 84,
+    "subject_id": 8
+  },
+  {
+    "name": "Excerpt of Prelude No. 7 ",
+    "composer": "Federico Mompou",
+    "piece_id": 85,
+    "subject_id": 8
+  },
+  {
+    "name": "Scales in 2nds, other exercises",
+    "composer": "Others",
+    "piece_id": 86,
+    "subject_id": 8
+  },
+  {
+    "name": "Goldberg Variations, BWV 988: I. Aria",
+    "composer": "J.S. Bach",
+    "piece_id": 87,
+    "subject_id": 8
+  },
+  {
+    "name": "Intermezzo in A Minor, Op. 116, No. 2: Andante",
+    "composer": "Johannes Brahms",
+    "piece_id": 88,
+    "subject_id": 8
+  },
+  {
+    "name": "Intermezzo in A Minor, Op. 116, No. 2: Andante",
+    "composer": "Johannes Brahms",
+    "piece_id": 89,
+    "subject_id": 8
+  },
+  {
+    "name": "Prelude in C Minor, BWV 847",
+    "composer": "J.S. Bach",
+    "piece_id": 90,
+    "subject_id": 8
+  },
+  {
+    "name": "Prelude in D-Flat Major, Op. 28, No. 15, \"Raindrop\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 91,
+    "subject_id": 8
+  },
+  {
+    "name": "Waltz in D-Flat Major, Op. 64, No. 1, \"Minute Waltz\"",
+    "composer": "Frédéric Chopin",
+    "piece_id": 92,
+    "subject_id": 8
+  },
+  {
+    "name": "Prelude in E Major, BWV 854",
+    "composer": "J.S. Bach",
+    "piece_id": 93,
+    "subject_id": 8
+  },
+  {
+    "name": "Étude in E Major, Op. 10, No. 3",
+    "composer": "Frédéric Chopin",
+    "piece_id": 94,
+    "subject_id": 8
+  },
+  {
+    "name": "Preludes, Nos. 1, 2, 3",
+    "composer": "George Gershwin",
+    "piece_id": 95,
+    "subject_id": 8
+  },
+  {
+    "name": "Piano Quintet No. 1 in C Minor, Op. 1: I. Allegro",
+    "composer": "Ernő Dohnányi",
+    "piece_id": 96,
+    "subject_id": 9
+  },
+  {
+    "name": "Piano Quintet No. 1 in C Minor, Op. 1: II. Scherzo (Allegro vivace)",
+    "composer": "Ernő Dohnányi",
+    "piece_id": 97,
+    "subject_id": 9
+  },
+  {
+    "name": "Piano Quintet No. 1 in C Minor, Op. 1: III. Adagio, quasi andante",
+    "composer": "Ernő Dohnányi",
+    "piece_id": 98,
+    "subject_id": 9
+  },
+  {
+    "name": "Piano Quintet No. 1 in C Minor, Op. 1 IV. Finale: Allegro moderato",
+    "composer": "Ernő Dohnányi",
+    "piece_id": 99,
+    "subject_id": 9
+  },
+  {
+    "name": "Piano Sonata No. 2 in B-Flat Minor, Op. 35: I. Grave – Doppio movimento",
+    "composer": "Frédéric Chopin",
+    "piece_id": 100,
+    "subject_id": 9
+  },
+  {
+    "name": "Piano Sonata No. 2 in B-Flat Minor, Op. 35: II. Scherzo",
+    "composer": "Frédéric Chopin",
+    "piece_id": 101,
+    "subject_id": 9
+  },
+  {
+    "name": "Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre: Lento",
+    "composer": "Frédéric Chopin",
+    "piece_id": 102,
+    "subject_id": 9
+  },
+  {
+    "name": "Piano Sonata No. 2 in B-Flat Minor, Op. 35: IV. Finale: Presto",
+    "composer": "Frédéric Chopin",
+    "piece_id": 103,
+    "subject_id": 9
+  },
+  {
+    "name": "Rhapsody in Blue",
+    "composer": "George Gershwin",
+    "piece_id": 104,
+    "subject_id": 10
+  },
+  {
+    "name": "Scales, Arpeggios and Chords",
+    "composer": "Others",
+    "piece_id": 105,
+    "subject_id": 11
+  },
+  {
+    "name": "Hanon No. 21 & 22 from The Virtuoso Pianist Pt II",
+    "composer": "Others",
+    "piece_id": 106,
+    "subject_id": 11
+  },
+  {
+    "name": "Czerny No. 1-3 from the School of Velocity ",
+    "composer": "Others",
+    "piece_id": 107,
+    "subject_id": 11
+  },
+  {
+    "name": "Piano Sonata in B-flat Major, Op. 22: I. Allegro con brio",
+    "composer": "Ludwig van Beethoven",
+    "piece_id": 108,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.1: Von fremden Ländern und Menschen",
+    "composer": "Robert Schumann",
+    "piece_id": 109,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.2: Kuriose Geschichte",
+    "composer": "Robert Schumann",
+    "piece_id": 110,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.3: Hasche-Mann",
+    "composer": "Robert Schumann",
+    "piece_id": 111,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.4: Bittendes Kind",
+    "composer": "Robert Schumann",
+    "piece_id": 112,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.5: Glückes genug",
+    "composer": "Robert Schumann",
+    "piece_id": 113,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.6: Wichtige Begebenheit",
+    "composer": "Robert Schumann",
+    "piece_id": 114,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.7: Träumerei",
+    "composer": "Robert Schumann",
+    "piece_id": 115,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.8: Am Kamin",
+    "composer": "Robert Schumann",
+    "piece_id": 116,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.9: Ritter vom Steckenpferd",
+    "composer": "Robert Schumann",
+    "piece_id": 117,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.10: Fast zu ernst",
+    "composer": "Robert Schumann",
+    "piece_id": 118,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.11: Fürchtenmachen",
+    "composer": "Robert Schumann",
+    "piece_id": 119,
+    "subject_id": 11
+  },
+  {
+    "name": "Kinderszenen, Op. 15 No.12: Kind im Einschlummern",
+    "composer": "Robert Schumann",
+    "piece_id": 120,
+    "subject_id": 11
+  },
+  {
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+    "composer": "Robert Schumann",
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+    "subject_id": 11
+  },
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+    "composer": "Edvard Grieg",
+    "piece_id": 122,
+    "subject_id": 12
+  },
+  {
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+    "composer": "Edvard Grieg",
+    "piece_id": 123,
+    "subject_id": 12
+  },
+  {
+    "name": "Lyric Pieces, Op. 62: No. 6 Heimwärts",
+    "composer": "Edvard Grieg",
+    "piece_id": 124,
+    "subject_id": 12
+  },
+  {
+    "name": "Lyric Pieces, Op. 43: No. 1 Schmetterling",
+    "composer": "Edvard Grieg",
+    "piece_id": 125,
+    "subject_id": 12
+  },
+  {
+    "name": "Lyric Pieces, Op. 71: No. 2 Sommerabend",
+    "composer": "Edvard Grieg",
+    "piece_id": 126,
+    "subject_id": 12
+  },
+  {
+    "name": "Lyric Pieces, Op. 54: No.3 Zug der Zwerge",
+    "composer": "Edvard Grieg",
+    "piece_id": 127,
+    "subject_id": 12
+  },
+  {
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+    "composer": "Debussy",
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+    "subject_id": 12
+  },
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+    "name": "Images, Book II: II. Et la lune descend sur le temple qui fut",
+    "composer": "Debussy",
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+    "subject_id": 12
+  },
+  {
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+    "composer": "Debussy",
+    "piece_id": 130,
+    "subject_id": 12
+  },
+  {
+    "name": "Piano Sonata No. 32 in C Minor, Op. 111: I. Maestoso – Allegro con brio ed appassionato",
+    "composer": "Ludwig van Beethoven",
+    "piece_id": 131,
+    "subject_id": 12
+  },
+  {
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+    "composer": "Ludwig van Beethoven",
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+    "subject_id": 12
+  },
+  {
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+    "composer": "J.S. Bach",
+    "piece_id": 133,
+    "subject_id": 13
+  },
+  {
+    "name": "English Suite No. 3 in g minor, BWV 808: II. Allemande",
+    "composer": "J.S. Bach",
+    "piece_id": 134,
+    "subject_id": 13
+  },
+  {
+    "name": "English Suite No. 3 in g minor, BWV 808: III. Courante",
+    "composer": "J.S. Bach",
+    "piece_id": 135,
+    "subject_id": 13
+  },
+  {
+    "name": "English Suite No. 3 in g minor, BWV 808: IV. Sarabande",
+    "composer": "J.S. Bach",
+    "piece_id": 136,
+    "subject_id": 13
+  },
+  {
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+    "composer": "J.S. Bach",
+    "piece_id": 137,
+    "subject_id": 13
+  },
+  {
+    "name": "English Suite No. 3 in g minor, BWV 808: VI. Gavotte II (ou la musette)",
+    "composer": "J.S. Bach",
+    "piece_id": 138,
+    "subject_id": 13
+  },
+  {
+    "name": "English Suite No. 3 in g minor, BWV 808: VII. Gigue",
+    "composer": "J.S. Bach",
+    "piece_id": 139,
+    "subject_id": 13
+  },
+  {
+    "name": "Trois morceaux pour piano: D’un vieux jardin",
+    "composer": "Lili Boulanger",
+    "piece_id": 140,
+    "subject_id": 13
+  },
+  {
+    "name": "Trois morceaux pour piano: D’un jardin clair ",
+    "composer": "Lili Boulanger",
+    "piece_id": 141,
+    "subject_id": 13
+  },
+  {
+    "name": "Trois morceaux pour piano: Cortège",
+    "composer": "Lili Boulanger",
+    "piece_id": 142,
+    "subject_id": 13
+  },
+  {
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+    "composer": "Sergei Rachmaninoff",
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+    "subject_id": 13
+  },
+  {
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+    "composer": "Sergei Rachmaninoff",
+    "piece_id": 144,
+    "subject_id": 13
+  },
+  {
+    "name": "Études-Tableaux, Op. 39: VII. Lento lugubre in c minor",
+    "composer": "Sergei Rachmaninoff",
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+    "subject_id": 13
+  },
+  {
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+    "subject_id": 14
+  },
+  {
+    "name": "Fantasie in C major, Op. 17: II. Mäßig. Durchaus energisch",
+    "composer": "Robert Schumann",
+    "piece_id": 147,
+    "subject_id": 14
+  },
+  {
+    "name": "Fantasie in C major, Op. 17: III. Langsam getragen. Durchweg leise zu halten",
+    "composer": "Robert Schumann",
+    "piece_id": 148,
+    "subject_id": 14
+  },
+  {
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+    "composer": "Robert Schumann",
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+    "subject_id": 14
+  },
+  {
+    "name": "Piano Sonata No. 1 in F-sharp minor, Op. 11: II. Aria",
+    "composer": "Robert Schumann",
+    "piece_id": 150,
+    "subject_id": 14
+  },
+  {
+    "name": "Piano Sonata No. 1 in F-sharp minor, Op. 11: III. Scherzo e Intermezzo. Allegrissimo",
+    "composer": "Robert Schumann",
+    "piece_id": 151,
+    "subject_id": 14
+  },
+  {
+    "name": "Piano Sonata No. 1 in F-sharp minor, Op. 11: IV. Finale. Allegro un poco maestoso",
+    "composer": "Robert Schumann",
+    "piece_id": 152,
+    "subject_id": 14
+  }
+]
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diff --git a/visualizer/assets/piano_meshes/1.mtl b/visualizer/assets/piano_meshes/1.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..936b726d175d9ced69cefa60ac23a7da4fd0dff9
--- /dev/null
+++ b/visualizer/assets/piano_meshes/1.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.090:Normal
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.000000 0.000000 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
diff --git a/visualizer/assets/piano_meshes/1.obj b/visualizer/assets/piano_meshes/1.obj
new file mode 100644
index 0000000000000000000000000000000000000000..271400cf2fcd6a65492408583456f65ca9ebb91b
--- /dev/null
+++ b/visualizer/assets/piano_meshes/1.obj
@@ -0,0 +1,697 @@
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+# www.blender.org
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index 0000000000000000000000000000000000000000..d8ea1dba53cd9699defd1d74de91fb9aa123d1fd
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diff --git a/visualizer/assets/piano_meshes/11.mtl b/visualizer/assets/piano_meshes/11.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..4647e2f4a0550ba11607fb19f2cc250acb9a9544
--- /dev/null
+++ b/visualizer/assets/piano_meshes/11.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.100:Normal
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diff --git a/visualizer/assets/piano_meshes/11.obj b/visualizer/assets/piano_meshes/11.obj
new file mode 100644
index 0000000000000000000000000000000000000000..e2f41f9cbc69b631dd0c320effff43d18930c192
--- /dev/null
+++ b/visualizer/assets/piano_meshes/11.obj
@@ -0,0 +1,697 @@
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index 0000000000000000000000000000000000000000..260f4f7594d68cd9fa2b34e275409dcea9ab5ee3
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diff --git a/visualizer/assets/piano_meshes/13.mtl b/visualizer/assets/piano_meshes/13.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..1c147e991b93f9872811da6f7328daca9fa6d225
--- /dev/null
+++ b/visualizer/assets/piano_meshes/13.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.102:Normal
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diff --git a/visualizer/assets/piano_meshes/13.obj b/visualizer/assets/piano_meshes/13.obj
new file mode 100644
index 0000000000000000000000000000000000000000..15355345dc61b99289e96942cd7e20f1a2f7960a
--- /dev/null
+++ b/visualizer/assets/piano_meshes/13.obj
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diff --git a/visualizer/assets/piano_meshes/14.mtl b/visualizer/assets/piano_meshes/14.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..3af6b36a878b0bd9a7a31752ce968e607020ccc7
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diff --git a/visualizer/assets/piano_meshes/14.obj b/visualizer/assets/piano_meshes/14.obj
new file mode 100644
index 0000000000000000000000000000000000000000..861a4c3ab46f91ab9b5825f8540b47bde9de85ea
--- /dev/null
+++ b/visualizer/assets/piano_meshes/14.obj
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diff --git a/visualizer/assets/piano_meshes/15.mtl b/visualizer/assets/piano_meshes/15.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..7e27a7faf5d0c42a2992e8828b43d95d79fa71f9
--- /dev/null
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+
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diff --git a/visualizer/assets/piano_meshes/15.obj b/visualizer/assets/piano_meshes/15.obj
new file mode 100644
index 0000000000000000000000000000000000000000..e1794a0f3cd470fd2ea5d1f0d2b9809db2f55275
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/16.mtl b/visualizer/assets/piano_meshes/16.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..f6f4d0a8144ef9619d3c0f78fe6e7f8886184ca2
--- /dev/null
+++ b/visualizer/assets/piano_meshes/16.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.105:Normal
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+Ks 0.500000 0.500000 0.500000
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diff --git a/visualizer/assets/piano_meshes/16.obj b/visualizer/assets/piano_meshes/16.obj
new file mode 100644
index 0000000000000000000000000000000000000000..07e4068a2000daaf71b58f842234a4f2e696f638
--- /dev/null
+++ b/visualizer/assets/piano_meshes/16.obj
@@ -0,0 +1,697 @@
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/17.obj b/visualizer/assets/piano_meshes/17.obj
new file mode 100644
index 0000000000000000000000000000000000000000..4ebc994c9e25dd58fc15623b886369ab250e47da
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/18.mtl b/visualizer/assets/piano_meshes/18.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..4323832de7be9f46956c36c46d0bbb664e7b73d2
--- /dev/null
+++ b/visualizer/assets/piano_meshes/18.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/18.obj b/visualizer/assets/piano_meshes/18.obj
new file mode 100644
index 0000000000000000000000000000000000000000..d3549d7dc79229085db284f424a0dd70cbef7b27
--- /dev/null
+++ b/visualizer/assets/piano_meshes/18.obj
@@ -0,0 +1,697 @@
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diff --git a/visualizer/assets/piano_meshes/19.mtl b/visualizer/assets/piano_meshes/19.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..7209b4c5d2c1e0d0c5c1d3d87b7c0bdf11a73010
--- /dev/null
+++ b/visualizer/assets/piano_meshes/19.mtl
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diff --git a/visualizer/assets/piano_meshes/19.obj b/visualizer/assets/piano_meshes/19.obj
new file mode 100644
index 0000000000000000000000000000000000000000..6e3a28ff4af0f74c52e55129a531011aebcc9062
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/2.mtl b/visualizer/assets/piano_meshes/2.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..eb6f6a63d010a7751057f85a1903278c285cd8a1
--- /dev/null
+++ b/visualizer/assets/piano_meshes/2.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.091:Normal
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diff --git a/visualizer/assets/piano_meshes/2.obj b/visualizer/assets/piano_meshes/2.obj
new file mode 100644
index 0000000000000000000000000000000000000000..65971a8fada1668e7e3409105750d6a6e4ce32dd
--- /dev/null
+++ b/visualizer/assets/piano_meshes/2.obj
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diff --git a/visualizer/assets/piano_meshes/20.mtl b/visualizer/assets/piano_meshes/20.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..33e7d4d80014acc8833f59e4307f0f56b737fa0b
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diff --git a/visualizer/assets/piano_meshes/20.obj b/visualizer/assets/piano_meshes/20.obj
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index 0000000000000000000000000000000000000000..f2372662b69a3cc7241b0c3c320bbd6c667373b9
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diff --git a/visualizer/assets/piano_meshes/21.mtl b/visualizer/assets/piano_meshes/21.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..7838f5700504a7b8d18913b668bbb517b9e41ef8
--- /dev/null
+++ b/visualizer/assets/piano_meshes/21.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.110:Normal
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.000000 0.000000 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
diff --git a/visualizer/assets/piano_meshes/21.obj b/visualizer/assets/piano_meshes/21.obj
new file mode 100644
index 0000000000000000000000000000000000000000..e15b9ee96eba60a33ac78e30f3845ed7ba10abe9
--- /dev/null
+++ b/visualizer/assets/piano_meshes/21.obj
@@ -0,0 +1,697 @@
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+# www.blender.org
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index 0000000000000000000000000000000000000000..3c5d512da65f7c8ec1d0b15dc95fb8ad76cfd86a
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diff --git a/visualizer/assets/piano_meshes/23.mtl b/visualizer/assets/piano_meshes/23.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..540c78ae067986b3f88fa72304c42405537c2755
--- /dev/null
+++ b/visualizer/assets/piano_meshes/23.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/23.obj b/visualizer/assets/piano_meshes/23.obj
new file mode 100644
index 0000000000000000000000000000000000000000..12ec9ffb37b4c6985e39359c3b2b2469fd48ba1e
--- /dev/null
+++ b/visualizer/assets/piano_meshes/23.obj
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diff --git a/visualizer/assets/piano_meshes/24.mtl b/visualizer/assets/piano_meshes/24.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..9ba282ff2c6cd4a388dfe83ea5d1d26d5873f1d4
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/24.obj b/visualizer/assets/piano_meshes/24.obj
new file mode 100644
index 0000000000000000000000000000000000000000..e46550c6cd3657815899d51b0bfd2d1729b1dc06
--- /dev/null
+++ b/visualizer/assets/piano_meshes/24.obj
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diff --git a/visualizer/assets/piano_meshes/25.mtl b/visualizer/assets/piano_meshes/25.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..b83804f4382ef467897fe3ff55f37622bce9b409
--- /dev/null
+++ b/visualizer/assets/piano_meshes/25.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.114:Normal
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diff --git a/visualizer/assets/piano_meshes/25.obj b/visualizer/assets/piano_meshes/25.obj
new file mode 100644
index 0000000000000000000000000000000000000000..5ed1100ea111eec18707d6c7bea09b742eb45331
--- /dev/null
+++ b/visualizer/assets/piano_meshes/25.obj
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diff --git a/visualizer/assets/piano_meshes/26.mtl b/visualizer/assets/piano_meshes/26.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..8d9646ebce4887d01865547c5ce09c1f21d7c19d
--- /dev/null
+++ b/visualizer/assets/piano_meshes/26.mtl
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+# www.blender.org
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+newmtl Material:Key.115:Normal
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diff --git a/visualizer/assets/piano_meshes/26.obj b/visualizer/assets/piano_meshes/26.obj
new file mode 100644
index 0000000000000000000000000000000000000000..68ae310cf697bc716b6f06d1f5a30f2fa477f5ee
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/27.mtl b/visualizer/assets/piano_meshes/27.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..86765cbcbc282395b448252e9017b7668d65049a
--- /dev/null
+++ b/visualizer/assets/piano_meshes/27.mtl
@@ -0,0 +1,12 @@
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+# www.blender.org
+
+newmtl Material:Key.116:Normal
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diff --git a/visualizer/assets/piano_meshes/27.obj b/visualizer/assets/piano_meshes/27.obj
new file mode 100644
index 0000000000000000000000000000000000000000..323502250ac8cd0642244383c283584c00187b91
--- /dev/null
+++ b/visualizer/assets/piano_meshes/27.obj
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diff --git a/visualizer/assets/piano_meshes/28.mtl b/visualizer/assets/piano_meshes/28.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..9c11dc25afe619ba1ed6f3e7d33b03fc3ba0f609
--- /dev/null
+++ b/visualizer/assets/piano_meshes/28.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/28.obj b/visualizer/assets/piano_meshes/28.obj
new file mode 100644
index 0000000000000000000000000000000000000000..1c43807b686f16cff6dc94658d4ef0602b8d12de
--- /dev/null
+++ b/visualizer/assets/piano_meshes/28.obj
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diff --git a/visualizer/assets/piano_meshes/29.mtl b/visualizer/assets/piano_meshes/29.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..2415fedd0a4cea041623e3dc3a8dc4cb5ec1febf
--- /dev/null
+++ b/visualizer/assets/piano_meshes/29.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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+d 1.000000
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diff --git a/visualizer/assets/piano_meshes/29.obj b/visualizer/assets/piano_meshes/29.obj
new file mode 100644
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diff --git a/visualizer/assets/piano_meshes/3.mtl b/visualizer/assets/piano_meshes/3.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..08a74aba63687eb817c75f2af92a2afe9a8320ee
--- /dev/null
+++ b/visualizer/assets/piano_meshes/3.mtl
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/3.obj b/visualizer/assets/piano_meshes/3.obj
new file mode 100644
index 0000000000000000000000000000000000000000..f0a0ee16a6878761b8a62abd8e415f91234992d9
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/30.mtl b/visualizer/assets/piano_meshes/30.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..9e324ce66cc782b624d69c630633487048e1aac9
--- /dev/null
+++ b/visualizer/assets/piano_meshes/30.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/30.obj b/visualizer/assets/piano_meshes/30.obj
new file mode 100644
index 0000000000000000000000000000000000000000..b2ec1be4058d742baef7d8e8e2034a00a4a304b8
--- /dev/null
+++ b/visualizer/assets/piano_meshes/30.obj
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diff --git a/visualizer/assets/piano_meshes/31.mtl b/visualizer/assets/piano_meshes/31.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..953a643bcaf7806a57cd7568ab5d420ffd0922d5
--- /dev/null
+++ b/visualizer/assets/piano_meshes/31.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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new file mode 100644
index 0000000000000000000000000000000000000000..4335076a373a689f4c7a2c71ac3eae7059c927b3
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/32.mtl b/visualizer/assets/piano_meshes/32.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..fa76ad88da4e4a742dff663879f535dc473226d0
--- /dev/null
+++ b/visualizer/assets/piano_meshes/32.mtl
@@ -0,0 +1,12 @@
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diff --git a/visualizer/assets/piano_meshes/32.obj b/visualizer/assets/piano_meshes/32.obj
new file mode 100644
index 0000000000000000000000000000000000000000..fab970ddb20a4f381c602d62e1a6e9412dac3fe6
--- /dev/null
+++ b/visualizer/assets/piano_meshes/32.obj
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diff --git a/visualizer/assets/piano_meshes/33.mtl b/visualizer/assets/piano_meshes/33.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..eb619b9d6f85a56046a2261da8e447c8a31d4a9a
--- /dev/null
+++ b/visualizer/assets/piano_meshes/33.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/33.obj b/visualizer/assets/piano_meshes/33.obj
new file mode 100644
index 0000000000000000000000000000000000000000..0e2c1b0def56aa2a5ef9cfc9acb6d3421d06da50
--- /dev/null
+++ b/visualizer/assets/piano_meshes/33.obj
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diff --git a/visualizer/assets/piano_meshes/34.mtl b/visualizer/assets/piano_meshes/34.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..4c8a4c5a5e37bea7bd170c56129bb8069755988a
--- /dev/null
+++ b/visualizer/assets/piano_meshes/34.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/34.obj b/visualizer/assets/piano_meshes/34.obj
new file mode 100644
index 0000000000000000000000000000000000000000..35a59eface4a4294b1e9b106340435fe6503badc
--- /dev/null
+++ b/visualizer/assets/piano_meshes/34.obj
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diff --git a/visualizer/assets/piano_meshes/35.mtl b/visualizer/assets/piano_meshes/35.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..65c404b90cbc526f8939c5e20233e884377c9b75
--- /dev/null
+++ b/visualizer/assets/piano_meshes/35.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/35.obj b/visualizer/assets/piano_meshes/35.obj
new file mode 100644
index 0000000000000000000000000000000000000000..a1135b00c7787eafd43b05922070d3d39b5cc929
--- /dev/null
+++ b/visualizer/assets/piano_meshes/35.obj
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diff --git a/visualizer/assets/piano_meshes/36.mtl b/visualizer/assets/piano_meshes/36.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..34fa5e3a96103a75d70211f22ce354b446b7d601
--- /dev/null
+++ b/visualizer/assets/piano_meshes/36.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.125:Normal
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diff --git a/visualizer/assets/piano_meshes/36.obj b/visualizer/assets/piano_meshes/36.obj
new file mode 100644
index 0000000000000000000000000000000000000000..ad4da7f8b768d8c31edc45f805078edab6a80d9f
--- /dev/null
+++ b/visualizer/assets/piano_meshes/36.obj
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/37.mtl b/visualizer/assets/piano_meshes/37.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..b84aef7822428feac20adf0ab6ccc1d565ce4ef8
--- /dev/null
+++ b/visualizer/assets/piano_meshes/37.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.126:Normal
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
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diff --git a/visualizer/assets/piano_meshes/37.obj b/visualizer/assets/piano_meshes/37.obj
new file mode 100644
index 0000000000000000000000000000000000000000..b333ffc3eccb3adfe2aa18131dc052848799994a
--- /dev/null
+++ b/visualizer/assets/piano_meshes/37.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
+mtllib 37.mtl
+o Key.125
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diff --git a/visualizer/assets/piano_meshes/38.mtl b/visualizer/assets/piano_meshes/38.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..142e29a6914de8ad4ab3daad7e1766d3669d8014
--- /dev/null
+++ b/visualizer/assets/piano_meshes/38.mtl
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/38.obj b/visualizer/assets/piano_meshes/38.obj
new file mode 100644
index 0000000000000000000000000000000000000000..f2945c96e71ea607fc5cb35279bc73546c8121bd
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diff --git a/visualizer/assets/piano_meshes/39.mtl b/visualizer/assets/piano_meshes/39.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..34fa8fe0efbe67044d22ec06837efa8f353d0094
--- /dev/null
+++ b/visualizer/assets/piano_meshes/39.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.128:Normal
+Ns 479.778687
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diff --git a/visualizer/assets/piano_meshes/39.obj b/visualizer/assets/piano_meshes/39.obj
new file mode 100644
index 0000000000000000000000000000000000000000..d30e9bc8de633e0058c00c1cceaeb04def29647c
--- /dev/null
+++ b/visualizer/assets/piano_meshes/39.obj
@@ -0,0 +1,320 @@
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diff --git a/visualizer/assets/piano_meshes/4.mtl b/visualizer/assets/piano_meshes/4.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..0cfd536be5011f6826bbbb75d6c44352ba2987ee
--- /dev/null
+++ b/visualizer/assets/piano_meshes/4.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.093:Normal
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diff --git a/visualizer/assets/piano_meshes/4.obj b/visualizer/assets/piano_meshes/4.obj
new file mode 100644
index 0000000000000000000000000000000000000000..54a95e31ccb5ce5441bda14b14e08e472ad3bece
--- /dev/null
+++ b/visualizer/assets/piano_meshes/4.obj
@@ -0,0 +1,697 @@
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diff --git a/visualizer/assets/piano_meshes/40.mtl b/visualizer/assets/piano_meshes/40.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..fbfd9df6ed8af0befbbbba5f1068f6309ac1e782
--- /dev/null
+++ b/visualizer/assets/piano_meshes/40.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.129:Normal
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.000000 0.000000 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
diff --git a/visualizer/assets/piano_meshes/40.obj b/visualizer/assets/piano_meshes/40.obj
new file mode 100644
index 0000000000000000000000000000000000000000..3508ed83d1b8a1914e05bab180d8cb65ddb7ab36
--- /dev/null
+++ b/visualizer/assets/piano_meshes/40.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
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index 0000000000000000000000000000000000000000..5de4cb1d8e58d038bf2e7f72aa2541f2d86d0b33
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diff --git a/visualizer/assets/piano_meshes/41.obj b/visualizer/assets/piano_meshes/41.obj
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index 0000000000000000000000000000000000000000..295af6bef48a989f2d483a47bd50fa62c0dfe7cb
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diff --git a/visualizer/assets/piano_meshes/42.mtl b/visualizer/assets/piano_meshes/42.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..40f79954482c1c9205b45cc573383c735fd19ad9
--- /dev/null
+++ b/visualizer/assets/piano_meshes/42.mtl
@@ -0,0 +1,12 @@
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+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/42.obj b/visualizer/assets/piano_meshes/42.obj
new file mode 100644
index 0000000000000000000000000000000000000000..734e0704253bf34ac439a7c4dc6cda332f7805ee
--- /dev/null
+++ b/visualizer/assets/piano_meshes/42.obj
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diff --git a/visualizer/assets/piano_meshes/43.mtl b/visualizer/assets/piano_meshes/43.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..98bd7c2c9abad9d360c4948a5af7362613418e53
--- /dev/null
+++ b/visualizer/assets/piano_meshes/43.mtl
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diff --git a/visualizer/assets/piano_meshes/43.obj b/visualizer/assets/piano_meshes/43.obj
new file mode 100644
index 0000000000000000000000000000000000000000..961e6cbe0ea1ebd7f5ddb34381e5c9d63ae1f45d
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/44.mtl b/visualizer/assets/piano_meshes/44.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..950388b73a4161dc7dcb08a85347ea0d08609d45
--- /dev/null
+++ b/visualizer/assets/piano_meshes/44.mtl
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+# www.blender.org
+
+newmtl Material:Key.133:Normal
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diff --git a/visualizer/assets/piano_meshes/44.obj b/visualizer/assets/piano_meshes/44.obj
new file mode 100644
index 0000000000000000000000000000000000000000..23bc007938383b6995e7370ade1475fb4380c794
--- /dev/null
+++ b/visualizer/assets/piano_meshes/44.obj
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diff --git a/visualizer/assets/piano_meshes/45.mtl b/visualizer/assets/piano_meshes/45.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..3490e05efd39605909bffe8c240b623cd75a699d
--- /dev/null
+++ b/visualizer/assets/piano_meshes/45.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.134:Normal
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diff --git a/visualizer/assets/piano_meshes/45.obj b/visualizer/assets/piano_meshes/45.obj
new file mode 100644
index 0000000000000000000000000000000000000000..5e486debbc7140d57aeb25fd4ec56f620c662cd0
--- /dev/null
+++ b/visualizer/assets/piano_meshes/45.obj
@@ -0,0 +1,697 @@
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/46.mtl b/visualizer/assets/piano_meshes/46.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..11c69d4b209694a2b0feae85193902f657a1bc40
--- /dev/null
+++ b/visualizer/assets/piano_meshes/46.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.135:Normal
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diff --git a/visualizer/assets/piano_meshes/46.obj b/visualizer/assets/piano_meshes/46.obj
new file mode 100644
index 0000000000000000000000000000000000000000..e92f17c8d3c91d1695c4d40bfa2e071c927165df
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/47.mtl b/visualizer/assets/piano_meshes/47.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..70aa3c0000a83805bbb49735c497bed63b7b32f9
--- /dev/null
+++ b/visualizer/assets/piano_meshes/47.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.136:Normal
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diff --git a/visualizer/assets/piano_meshes/47.obj b/visualizer/assets/piano_meshes/47.obj
new file mode 100644
index 0000000000000000000000000000000000000000..b3a2f84c6c0a9fb6897a53fe314239c02f6838e7
--- /dev/null
+++ b/visualizer/assets/piano_meshes/47.obj
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diff --git a/visualizer/assets/piano_meshes/48.mtl b/visualizer/assets/piano_meshes/48.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..2877d0275c8882fb7ce034c4d55891767358ff18
--- /dev/null
+++ b/visualizer/assets/piano_meshes/48.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.137:Normal
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diff --git a/visualizer/assets/piano_meshes/48.obj b/visualizer/assets/piano_meshes/48.obj
new file mode 100644
index 0000000000000000000000000000000000000000..d833c5f32773dae719ee9f2f811461d3760682ff
--- /dev/null
+++ b/visualizer/assets/piano_meshes/48.obj
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diff --git a/visualizer/assets/piano_meshes/49.mtl b/visualizer/assets/piano_meshes/49.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..89bf4db7c6dbd163551532b301eecc0bf866c752
--- /dev/null
+++ b/visualizer/assets/piano_meshes/49.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.138:Normal
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
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diff --git a/visualizer/assets/piano_meshes/49.obj b/visualizer/assets/piano_meshes/49.obj
new file mode 100644
index 0000000000000000000000000000000000000000..6cc9c498da0440074b55147e92b2bf987ff7ca01
--- /dev/null
+++ b/visualizer/assets/piano_meshes/49.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
+mtllib 49.mtl
+o Key.137
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diff --git a/visualizer/assets/piano_meshes/5.mtl b/visualizer/assets/piano_meshes/5.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..c8a4df468818710a414abc1cffda33d64c39f2ab
--- /dev/null
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/5.obj b/visualizer/assets/piano_meshes/5.obj
new file mode 100644
index 0000000000000000000000000000000000000000..855d684bb8b4883ab0c3d00348cf44c08bc34e26
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/50.mtl b/visualizer/assets/piano_meshes/50.mtl
new file mode 100644
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--- /dev/null
+++ b/visualizer/assets/piano_meshes/50.mtl
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+# www.blender.org
+
+newmtl Material:Key.139:Normal
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diff --git a/visualizer/assets/piano_meshes/50.obj b/visualizer/assets/piano_meshes/50.obj
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index 0000000000000000000000000000000000000000..9b733559853abe5a7ee4b3de79afb138cc3ca68e
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/51.mtl b/visualizer/assets/piano_meshes/51.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..a62d5ca72032fd87abc725b68397bc3504cb1877
--- /dev/null
+++ b/visualizer/assets/piano_meshes/51.mtl
@@ -0,0 +1,12 @@
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+# www.blender.org
+
+newmtl Material:Key.140:Normal
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diff --git a/visualizer/assets/piano_meshes/51.obj b/visualizer/assets/piano_meshes/51.obj
new file mode 100644
index 0000000000000000000000000000000000000000..84f25eceaece0ed41fc5b4a1f562883e9e47b995
--- /dev/null
+++ b/visualizer/assets/piano_meshes/51.obj
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diff --git a/visualizer/assets/piano_meshes/52.mtl b/visualizer/assets/piano_meshes/52.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..d46ce4d438765ffbf5e9bbe52e43558cdee0e6c4
--- /dev/null
+++ b/visualizer/assets/piano_meshes/52.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/52.obj b/visualizer/assets/piano_meshes/52.obj
new file mode 100644
index 0000000000000000000000000000000000000000..b5a517ef546665fea2b64b32d5f22a782931396b
--- /dev/null
+++ b/visualizer/assets/piano_meshes/52.obj
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diff --git a/visualizer/assets/piano_meshes/53.mtl b/visualizer/assets/piano_meshes/53.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..c4333dc751a84d85958e8bdb230a5e1a4c8f1957
--- /dev/null
+++ b/visualizer/assets/piano_meshes/53.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.142:Normal
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diff --git a/visualizer/assets/piano_meshes/54.mtl b/visualizer/assets/piano_meshes/54.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..92ce79907b01b0c0b3da21711681cda39124f62a
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/54.obj b/visualizer/assets/piano_meshes/54.obj
new file mode 100644
index 0000000000000000000000000000000000000000..aa49035f14200a54812be40848c8da9dc0d59d62
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/55.mtl b/visualizer/assets/piano_meshes/55.mtl
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index 0000000000000000000000000000000000000000..2a27a9237526ba839c6b065cceba81fe23c70a2a
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/55.obj b/visualizer/assets/piano_meshes/55.obj
new file mode 100644
index 0000000000000000000000000000000000000000..db45df9c0be299e354813dbc56f8d57cec347d28
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/56.mtl b/visualizer/assets/piano_meshes/56.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..757e4851812aaf5d5602004fc3e86577a1617ba9
--- /dev/null
+++ b/visualizer/assets/piano_meshes/56.mtl
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+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.145:Normal
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diff --git a/visualizer/assets/piano_meshes/56.obj b/visualizer/assets/piano_meshes/56.obj
new file mode 100644
index 0000000000000000000000000000000000000000..5eb2afb2afb7d144cc3e60ea7bcc49c5869ccebc
--- /dev/null
+++ b/visualizer/assets/piano_meshes/56.obj
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diff --git a/visualizer/assets/piano_meshes/57.mtl b/visualizer/assets/piano_meshes/57.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..1ab1b65b3f25a5213cbaae8a60036722caa019fe
--- /dev/null
+++ b/visualizer/assets/piano_meshes/57.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.146:Normal
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diff --git a/visualizer/assets/piano_meshes/57.obj b/visualizer/assets/piano_meshes/57.obj
new file mode 100644
index 0000000000000000000000000000000000000000..0c020272b4ce7f0296f9477cecc57642b7d88331
--- /dev/null
+++ b/visualizer/assets/piano_meshes/57.obj
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/58.mtl b/visualizer/assets/piano_meshes/58.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..c6b358614cceaaa18a97a0a34a77e898b6db73bb
--- /dev/null
+++ b/visualizer/assets/piano_meshes/58.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.147:Normal
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diff --git a/visualizer/assets/piano_meshes/58.obj b/visualizer/assets/piano_meshes/58.obj
new file mode 100644
index 0000000000000000000000000000000000000000..763aa633d7baa6a0318efabecb9bad17010f1f84
--- /dev/null
+++ b/visualizer/assets/piano_meshes/58.obj
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diff --git a/visualizer/assets/piano_meshes/59.mtl b/visualizer/assets/piano_meshes/59.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..806f952e78bbfb2852083f3b8c3743b7e6b67737
--- /dev/null
+++ b/visualizer/assets/piano_meshes/59.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.148:Normal
+Ns 250.000000
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diff --git a/visualizer/assets/piano_meshes/59.obj b/visualizer/assets/piano_meshes/59.obj
new file mode 100644
index 0000000000000000000000000000000000000000..c7b5c572f2f2bd0040beb2df94d97ab171f2e3b1
--- /dev/null
+++ b/visualizer/assets/piano_meshes/59.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
+mtllib 59.mtl
+o Key.147
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diff --git a/visualizer/assets/piano_meshes/6.mtl b/visualizer/assets/piano_meshes/6.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..5c543595da25031d77faf2b5db5c1387519d4d93
--- /dev/null
+++ b/visualizer/assets/piano_meshes/6.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.095:Normal
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.000000 0.000000 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
diff --git a/visualizer/assets/piano_meshes/6.obj b/visualizer/assets/piano_meshes/6.obj
new file mode 100644
index 0000000000000000000000000000000000000000..0bd9eaed89bd317e1649f3c3cc61a124aad78711
--- /dev/null
+++ b/visualizer/assets/piano_meshes/6.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/60.mtl b/visualizer/assets/piano_meshes/60.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..039db469126f8133f07e0b5fe5b4e72dad671a0e
--- /dev/null
+++ b/visualizer/assets/piano_meshes/60.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/60.obj b/visualizer/assets/piano_meshes/60.obj
new file mode 100644
index 0000000000000000000000000000000000000000..15a059b6711545dbd2e652b7bcfd3b32b6fd1ccc
--- /dev/null
+++ b/visualizer/assets/piano_meshes/60.obj
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diff --git a/visualizer/assets/piano_meshes/61.mtl b/visualizer/assets/piano_meshes/61.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..e79f8eba3f84f35853e9f24a5797f169a3cbc827
--- /dev/null
+++ b/visualizer/assets/piano_meshes/61.mtl
@@ -0,0 +1,12 @@
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+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/61.obj b/visualizer/assets/piano_meshes/61.obj
new file mode 100644
index 0000000000000000000000000000000000000000..6cd0a37bbd7e4f4caca2d10b89a680a0fa180f44
--- /dev/null
+++ b/visualizer/assets/piano_meshes/61.obj
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diff --git a/visualizer/assets/piano_meshes/62.mtl b/visualizer/assets/piano_meshes/62.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..6836471a4c69d917a127917c87537fb6c52cf9cf
--- /dev/null
+++ b/visualizer/assets/piano_meshes/62.mtl
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diff --git a/visualizer/assets/piano_meshes/62.obj b/visualizer/assets/piano_meshes/62.obj
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index 0000000000000000000000000000000000000000..268d18c92633391901a25506f977e59ebfd32480
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diff --git a/visualizer/assets/piano_meshes/63.mtl b/visualizer/assets/piano_meshes/63.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..1356435d95af536911be3f20516e27aebfb4d456
--- /dev/null
+++ b/visualizer/assets/piano_meshes/63.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.152:Normal
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diff --git a/visualizer/assets/piano_meshes/63.obj b/visualizer/assets/piano_meshes/63.obj
new file mode 100644
index 0000000000000000000000000000000000000000..d78e566dfbe43a73dd03f555ea237d07229672f1
--- /dev/null
+++ b/visualizer/assets/piano_meshes/63.obj
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diff --git a/visualizer/assets/piano_meshes/64.mtl b/visualizer/assets/piano_meshes/64.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..b2265673da2dc3f78da4f70d86a705e3e790845b
--- /dev/null
+++ b/visualizer/assets/piano_meshes/64.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/64.obj b/visualizer/assets/piano_meshes/64.obj
new file mode 100644
index 0000000000000000000000000000000000000000..abf981fc91be741f61480c6649fbe0759427f344
--- /dev/null
+++ b/visualizer/assets/piano_meshes/64.obj
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new file mode 100644
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diff --git a/visualizer/assets/piano_meshes/65.obj b/visualizer/assets/piano_meshes/65.obj
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diff --git a/visualizer/assets/piano_meshes/66.mtl b/visualizer/assets/piano_meshes/66.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..f915a1ead6623ba4a124f807e7c6572ab34a560f
--- /dev/null
+++ b/visualizer/assets/piano_meshes/66.mtl
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+# www.blender.org
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+newmtl Material:Key.155:Normal
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diff --git a/visualizer/assets/piano_meshes/66.obj b/visualizer/assets/piano_meshes/66.obj
new file mode 100644
index 0000000000000000000000000000000000000000..a92b06bc0a31fd73c24f9dc1482a1719171df243
--- /dev/null
+++ b/visualizer/assets/piano_meshes/66.obj
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diff --git a/visualizer/assets/piano_meshes/67.mtl b/visualizer/assets/piano_meshes/67.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..90d07330a229a52fe5b318a87aa6319fed110494
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+
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diff --git a/visualizer/assets/piano_meshes/67.obj b/visualizer/assets/piano_meshes/67.obj
new file mode 100644
index 0000000000000000000000000000000000000000..b8a1d1d43bc263bf090ecd64a0f53c50d096f25e
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diff --git a/visualizer/assets/piano_meshes/68.mtl b/visualizer/assets/piano_meshes/68.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..19f659d29809d85ff4e6083d19f33cc3e3524359
--- /dev/null
+++ b/visualizer/assets/piano_meshes/68.mtl
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diff --git a/visualizer/assets/piano_meshes/68.obj b/visualizer/assets/piano_meshes/68.obj
new file mode 100644
index 0000000000000000000000000000000000000000..ebb684a360f42f627ca0bcdc9d1d9415f1d61b6f
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diff --git a/visualizer/assets/piano_meshes/69.mtl b/visualizer/assets/piano_meshes/69.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..6838d5c4d9f3f1c906fc561dd6b623d8a886a177
--- /dev/null
+++ b/visualizer/assets/piano_meshes/69.mtl
@@ -0,0 +1,12 @@
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+# www.blender.org
+
+newmtl Material:Key.158:Normal
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diff --git a/visualizer/assets/piano_meshes/69.obj b/visualizer/assets/piano_meshes/69.obj
new file mode 100644
index 0000000000000000000000000000000000000000..af6ef88bea907253444058e55322c1a206c04197
--- /dev/null
+++ b/visualizer/assets/piano_meshes/69.obj
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diff --git a/visualizer/assets/piano_meshes/7.mtl b/visualizer/assets/piano_meshes/7.mtl
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index 0000000000000000000000000000000000000000..5eedccfea2d154d99bf6467af9720eb9b42e9daf
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diff --git a/visualizer/assets/piano_meshes/7.obj b/visualizer/assets/piano_meshes/7.obj
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index 0000000000000000000000000000000000000000..a9e1c0a4fb4d574f2a3e14820468785327c7ec07
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diff --git a/visualizer/assets/piano_meshes/70.mtl b/visualizer/assets/piano_meshes/70.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..e655e9515ca1450cdff182f24aa756a74ab768fe
--- /dev/null
+++ b/visualizer/assets/piano_meshes/70.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.159:Normal
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diff --git a/visualizer/assets/piano_meshes/70.obj b/visualizer/assets/piano_meshes/70.obj
new file mode 100644
index 0000000000000000000000000000000000000000..fc0e86437c31c76d2335e2130e08f5c8f59e4ce0
--- /dev/null
+++ b/visualizer/assets/piano_meshes/70.obj
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diff --git a/visualizer/assets/piano_meshes/71.mtl b/visualizer/assets/piano_meshes/71.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..4b60e3ac951038a56046dc9ddcfda7fc28e7efe6
--- /dev/null
+++ b/visualizer/assets/piano_meshes/71.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.160:Normal
+Ns 250.000000
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diff --git a/visualizer/assets/piano_meshes/71.obj b/visualizer/assets/piano_meshes/71.obj
new file mode 100644
index 0000000000000000000000000000000000000000..cd3fdce62b89c7e86da4176d57ea290d7d0ef7c6
--- /dev/null
+++ b/visualizer/assets/piano_meshes/71.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
+mtllib 71.mtl
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diff --git a/visualizer/assets/piano_meshes/72.mtl b/visualizer/assets/piano_meshes/72.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..79b473f5ba0ea2e92eea9fbeec734f38a33cf7fd
--- /dev/null
+++ b/visualizer/assets/piano_meshes/72.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.161:Normal
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diff --git a/visualizer/assets/piano_meshes/72.obj b/visualizer/assets/piano_meshes/72.obj
new file mode 100644
index 0000000000000000000000000000000000000000..81e33a07ef1b9cfef3e979f8f111a7abf95c3024
--- /dev/null
+++ b/visualizer/assets/piano_meshes/72.obj
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diff --git a/visualizer/assets/piano_meshes/73.mtl b/visualizer/assets/piano_meshes/73.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..43846d9a28abd4a69445b04212a8c80eb627d3ba
--- /dev/null
+++ b/visualizer/assets/piano_meshes/73.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.162:Normal
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diff --git a/visualizer/assets/piano_meshes/73.obj b/visualizer/assets/piano_meshes/73.obj
new file mode 100644
index 0000000000000000000000000000000000000000..94bfca85ce87523a5f4f4feb281e7aa55ebacaf0
--- /dev/null
+++ b/visualizer/assets/piano_meshes/73.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/74.mtl b/visualizer/assets/piano_meshes/74.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..59107ea69c4661b76403ce171669ef01249a4dcb
--- /dev/null
+++ b/visualizer/assets/piano_meshes/74.mtl
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+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/74.obj b/visualizer/assets/piano_meshes/74.obj
new file mode 100644
index 0000000000000000000000000000000000000000..60d09c4d5e7463d9e5047c4f5c2c841cc13fdfa0
--- /dev/null
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new file mode 100644
index 0000000000000000000000000000000000000000..25b08261f805d02f75b983288af7703dca845356
--- /dev/null
+++ b/visualizer/assets/piano_meshes/75.mtl
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diff --git a/visualizer/assets/piano_meshes/75.obj b/visualizer/assets/piano_meshes/75.obj
new file mode 100644
index 0000000000000000000000000000000000000000..391792821e73ad20ee0f983858e456443f1c6644
--- /dev/null
+++ b/visualizer/assets/piano_meshes/75.obj
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diff --git a/visualizer/assets/piano_meshes/76.mtl b/visualizer/assets/piano_meshes/76.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..002665a59a0bbcfd829ad7d7641b57977a6f4d70
--- /dev/null
+++ b/visualizer/assets/piano_meshes/76.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.165:Normal
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diff --git a/visualizer/assets/piano_meshes/76.obj b/visualizer/assets/piano_meshes/76.obj
new file mode 100644
index 0000000000000000000000000000000000000000..bb3acc9678657aaad347d86c3a159667287fb536
--- /dev/null
+++ b/visualizer/assets/piano_meshes/76.obj
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diff --git a/visualizer/assets/piano_meshes/77.mtl b/visualizer/assets/piano_meshes/77.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..2e73866596a7902ac626df6a5af775a9394a37e8
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diff --git a/visualizer/assets/piano_meshes/77.obj b/visualizer/assets/piano_meshes/77.obj
new file mode 100644
index 0000000000000000000000000000000000000000..9d186bb3e29ba0195f5f6661ef345bf1fec3cfbe
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/78.mtl b/visualizer/assets/piano_meshes/78.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..76a5f24b3dbf7c9894be8c951d68e709e369862f
--- /dev/null
+++ b/visualizer/assets/piano_meshes/78.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.167:Normal
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.000000 0.000000 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
diff --git a/visualizer/assets/piano_meshes/78.obj b/visualizer/assets/piano_meshes/78.obj
new file mode 100644
index 0000000000000000000000000000000000000000..e16ed7ea45dfded4de70b1399a9ed5b3c8c7eeaa
--- /dev/null
+++ b/visualizer/assets/piano_meshes/78.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
+mtllib 78.mtl
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diff --git a/visualizer/assets/piano_meshes/79.mtl b/visualizer/assets/piano_meshes/79.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..43a7bf7f47d84d90fea1cbde2b47d8f164c21163
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/79.obj b/visualizer/assets/piano_meshes/79.obj
new file mode 100644
index 0000000000000000000000000000000000000000..6777f9cc67660ce69471f12371aca6eef1ff01b9
--- /dev/null
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index 0000000000000000000000000000000000000000..b93ceac8d953cfd41309b2cb6eefaa22b4eeef40
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diff --git a/visualizer/assets/piano_meshes/8.obj b/visualizer/assets/piano_meshes/8.obj
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index 0000000000000000000000000000000000000000..5087363a1dff4176a3b22c4674b0a8cf4e52dc77
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diff --git a/visualizer/assets/piano_meshes/80.mtl b/visualizer/assets/piano_meshes/80.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..4d43fb0cc16e6e20eb1a8a61555f60e91c53e9b6
--- /dev/null
+++ b/visualizer/assets/piano_meshes/80.mtl
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+# www.blender.org
+
+newmtl Material:Key.169:Normal
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diff --git a/visualizer/assets/piano_meshes/80.obj b/visualizer/assets/piano_meshes/80.obj
new file mode 100644
index 0000000000000000000000000000000000000000..c6b3910d406d8c68705f6d0db183e21aae21dd60
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/81.mtl b/visualizer/assets/piano_meshes/81.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..1be82f3764302cf68571e946ac9d337809c636ef
--- /dev/null
+++ b/visualizer/assets/piano_meshes/81.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.170:Normal
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diff --git a/visualizer/assets/piano_meshes/81.obj b/visualizer/assets/piano_meshes/81.obj
new file mode 100644
index 0000000000000000000000000000000000000000..abecb8d7f5f2381eac88fe1f3b573439de5c2312
--- /dev/null
+++ b/visualizer/assets/piano_meshes/81.obj
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diff --git a/visualizer/assets/piano_meshes/82.mtl b/visualizer/assets/piano_meshes/82.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..01ef40e4538f72ea093421cee88311ae4e8a695e
--- /dev/null
+++ b/visualizer/assets/piano_meshes/82.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.171:Normal
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diff --git a/visualizer/assets/piano_meshes/82.obj b/visualizer/assets/piano_meshes/82.obj
new file mode 100644
index 0000000000000000000000000000000000000000..c6d13036bdfcb2619cbe7d76608e684814ff0572
--- /dev/null
+++ b/visualizer/assets/piano_meshes/82.obj
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/83.mtl b/visualizer/assets/piano_meshes/83.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..89f3cef7d9b90d41fe57c456501c915d7f66baca
--- /dev/null
+++ b/visualizer/assets/piano_meshes/83.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.172:Normal
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diff --git a/visualizer/assets/piano_meshes/83.obj b/visualizer/assets/piano_meshes/83.obj
new file mode 100644
index 0000000000000000000000000000000000000000..373f775bef30a51bb2041a8b45d516fef99d7023
--- /dev/null
+++ b/visualizer/assets/piano_meshes/83.obj
@@ -0,0 +1,697 @@
+# Blender 4.1.1
+# www.blender.org
+mtllib 83.mtl
+o Key.171
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diff --git a/visualizer/assets/piano_meshes/84.mtl b/visualizer/assets/piano_meshes/84.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..9d6e5c6c86f6d97183cfd49b77548c36addb3eef
--- /dev/null
+++ b/visualizer/assets/piano_meshes/84.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/84.obj b/visualizer/assets/piano_meshes/84.obj
new file mode 100644
index 0000000000000000000000000000000000000000..c3845c7d58cddf5ab14a301a506a1cd703db9b96
--- /dev/null
+++ b/visualizer/assets/piano_meshes/84.obj
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diff --git a/visualizer/assets/piano_meshes/85.mtl b/visualizer/assets/piano_meshes/85.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..ae7ebdf474cfb9f09c4e0780b727bf8e65ec47cd
--- /dev/null
+++ b/visualizer/assets/piano_meshes/85.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.174:Normal
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.000000 0.000000 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
diff --git a/visualizer/assets/piano_meshes/85.obj b/visualizer/assets/piano_meshes/85.obj
new file mode 100644
index 0000000000000000000000000000000000000000..2f71fe6b7e0fa7c8ba966a20212eaa77a4e0ab80
--- /dev/null
+++ b/visualizer/assets/piano_meshes/85.obj
@@ -0,0 +1,697 @@
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+# www.blender.org
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diff --git a/visualizer/assets/piano_meshes/86.mtl b/visualizer/assets/piano_meshes/86.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..f0894ec05e01274568a7f83b3a18bb4ed818441e
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diff --git a/visualizer/assets/piano_meshes/86.obj b/visualizer/assets/piano_meshes/86.obj
new file mode 100644
index 0000000000000000000000000000000000000000..25df3903d5d3570ecfe6ae06ddd18e5a5ae88bed
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diff --git a/visualizer/assets/piano_meshes/87.mtl b/visualizer/assets/piano_meshes/87.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..7a2499dfafeb7a932064aec0dd1f4d315f093658
--- /dev/null
+++ b/visualizer/assets/piano_meshes/87.mtl
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+# www.blender.org
+
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diff --git a/visualizer/assets/piano_meshes/87.obj b/visualizer/assets/piano_meshes/87.obj
new file mode 100644
index 0000000000000000000000000000000000000000..a5178bda3328ab8eeddc15eb5e7c5c9b4196d0a1
--- /dev/null
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diff --git a/visualizer/assets/piano_meshes/9.mtl b/visualizer/assets/piano_meshes/9.mtl
new file mode 100644
index 0000000000000000000000000000000000000000..9320a72e73d551b4d617fd716a1e1f02cb2e42c8
--- /dev/null
+++ b/visualizer/assets/piano_meshes/9.mtl
@@ -0,0 +1,12 @@
+# Blender 4.1.1 MTL File: 'dataset_examples_op36.blend'
+# www.blender.org
+
+newmtl Material:Key.098:Normal
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diff --git a/visualizer/assets/piano_meshes/9.obj b/visualizer/assets/piano_meshes/9.obj
new file mode 100644
index 0000000000000000000000000000000000000000..7063b10d5f61adbf42590b67d38b9b779205d277
--- /dev/null
+++ b/visualizer/assets/piano_meshes/9.obj
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+# www.blender.org
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diff --git a/visualizer/server.py b/visualizer/server.py
new file mode 100644
index 0000000000000000000000000000000000000000..69ff3675c6d6c4101f597f0f8d45844ad11e1921
--- /dev/null
+++ b/visualizer/server.py
@@ -0,0 +1,155 @@
+from flask import (
+    Flask,
+    jsonify,
+    Response,
+    make_response,
+    send_file,
+    send_from_directory,
+)
+from flask import Response
+import json
+import time
+import pickle
+import numpy as np
+import json
+from pathlib import Path
+
+
+def get_release_root_path():
+    return Path(__file__).resolve().parents[1]
+
+print("Loading data...")
+
+assets_dir = get_release_root_path() / "visualizer" / "assets"
+piece_id = 1
+data_dir = get_release_root_path() / "dataset" / f"{piece_id:03d}"
+
+with open(assets_dir / "mano_faces.pkl", "rb") as f:
+    faces = pickle.load(f)
+
+print("Data loaded.")
+app = Flask(__name__)
+
+
+@app.route("/")
+def index():
+    # return the index.html in the current directory
+    return send_file(Path(__file__).parent / "static" / "index.html")
+
+
+@app.route("/resources/<path:filename>")
+def resources(filename):
+    # return the index.html in the current directory
+    return send_file(Path(__file__).parent / "static" / "resources" / filename)
+
+
+@app.route("/js/<path:filename>")
+def js(filename):
+    # return the index.html in the current directory
+    return send_file(Path(__file__).parent / "static" / "js" / filename)
+
+
+@app.route("/css/<path:filename>")
+def css(filename):
+    # return the index.html in the current directory
+    return send_file(Path(__file__).parent / "static" / "css" / filename)
+
+
+@app.route("/vis")
+def vis():
+    return send_file(Path(__file__).parent / "static" / "vis.html")
+
+
+@app.route("/pieces")
+def pieces():
+    # return the index.html in the current directory
+    return send_file(Path(__file__).parent / "pieces.html")
+
+
+@app.route("/pieces_metadata")
+def pieces_metadata():
+    # Ensure the file exists at this path
+    metadata_file = assets_dir.parents[1] / "metadata.json"
+    if metadata_file.exists():
+        return send_file(metadata_file, mimetype="application/json")
+    else:
+        return jsonify({"error": "File not found"}), 404
+
+
+def get_data_path(piece_id):
+    return get_release_root_path() / "dataset" / f"{piece_id:03d}"
+
+
+@app.route("/audio/<int:piece_id>")
+def get_audio(piece_id):
+    audio_path = get_data_path(piece_id) / "audio.mp3"
+    return send_file(audio_path)
+
+
+@app.route("/metadata/<int:piece_id>")
+def get_piece_metadata(piece_id):
+    return send_file(
+        get_data_path(piece_id) / "vis" / "metadata.json", mimetype="application/json"
+    )
+
+
+@app.route("/mano_faces_data")
+def mano_faces_data():
+    d = {
+        "left_faces": faces["left_faces"].tolist(),
+        "right_faces": faces["right_faces"].tolist(),
+    }
+    return jsonify(d)
+
+
+@app.route("/mano_vertices_data/<int:piece_id>")
+def stream_mano_vertices_data(piece_id):
+    data_path = get_data_path(piece_id)
+    with open(data_path / "motion.pkl", "rb") as f:
+        motion_data = pickle.load(f)
+    with open(data_path / "vis" / "pressed_keys.pkl", "rb") as f:
+        pressed_keys = pickle.load(f)
+    print("motion data length", len(motion_data["left"]["mano_params"]["verts"]))
+    print("pressed keys length", len(pressed_keys))
+    n_frames = min(len(motion_data["left"]["mano_params"]["verts"]), len(pressed_keys))
+    print("n_frames", n_frames)
+
+    def generate_mesh_data():
+        # Stream each frame of the mesh data
+        for i in range(0, n_frames):
+            frame_data = {
+                "left_vertices": np.round(
+                    motion_data["left"]["mano_params"]["verts"][i], 4
+                )
+                .astype(str)
+                .tolist(),
+                "right_vertices": np.round(
+                    motion_data["right"]["mano_params"]["verts"][i], 4
+                )
+                .astype(str)
+                .tolist(),
+                "pressed_keys": pressed_keys[i].tolist(),
+            }
+            # Convert the frame data to a JSON string and add a newline delimiter
+            yield json.dumps(
+                frame_data
+            ) + "\n"  # Send each frame as a complete JSON object
+
+    response = Response(generate_mesh_data(), content_type="application/json")
+    response.headers["Access-Control-Allow-Origin"] = "*"  # Allow CORS from any origin
+    return response
+
+
+@app.route("/piano_mesh/<path:filename>")
+def get_obj_file(filename):
+    piano_mesh_dir = assets_dir / "piano_meshes"
+    if (piano_mesh_dir / filename).exists():
+        response = send_from_directory(piano_mesh_dir, filename)
+        response.headers["Access-Control-Allow-Origin"] = "*"
+        return response
+    else:
+        return jsonify({"error": "File not found"}), 404
+
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=8080)
diff --git a/visualizer/static/css/vis.css b/visualizer/static/css/vis.css
new file mode 100644
index 0000000000000000000000000000000000000000..d8add558fa8e03b50aa23a4cd506240facffbb96
--- /dev/null
+++ b/visualizer/static/css/vis.css
@@ -0,0 +1,222 @@
+body {
+    font-family: 'Source Sans Pro', sans-serif;
+    background-color: #f0f0f0;
+    margin: 0;
+    padding: 0;
+    overflow: hidden;
+}
+
+/* Fullscreen canvas for the Three.js scene */
+canvas {
+    display: block;
+    width: 100vw;
+    height: 100vh;
+}
+
+.lil-gui {
+    font-size: 16px; /* Set this to your desired font size */
+}
+
+.info-box {
+    position: absolute;
+    top: 10px;
+    left: 10px;
+    background-color: rgba(0, 0, 0, 0.5); /* Light semi-transparent background */
+    color: white; /* White text for contrast */
+    padding: 15px;
+    /*border-radius: 15px; !* Rounded corners *!*/
+    width: 220px;
+    box-shadow: 0 2px 4px rgba(255, 255, 255, 0.3); /* Optional light shadow */
+}
+
+#scrubber {
+    width: 325px;
+}
+
+.player {
+    position: absolute;
+    bottom: 20px;
+    left: 50%;
+    transform: translateX(-50%);
+    display: flex;
+    justify-content: center;
+    gap: 10px;
+
+    align-items: center;
+    background-color: #333;
+    padding: 10px 20px;
+    border-radius: 10px;
+    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
+    width: 600px;
+}
+
+.player button {
+    background-color: transparent;
+    border: none;
+    color: white;
+    font-size: 20px;
+    cursor: pointer;
+    margin-right: 10px;
+    width: 35px;
+    height: 35px;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+}
+
+.player button i {
+    color: white;
+}
+
+.player button:hover i,
+.player button:focus i,
+.player button:active i {
+    color: white;
+}
+
+
+/* Progress Bar Container */
+.progress-bar-container {
+    position: relative;
+    flex-grow: 2;
+    margin: 0 10px;
+    height: 10px;
+    background-color: #e0e0e0;
+    border-radius: 5px;
+    overflow: visible; /* Changed from hidden to visible */
+    width: 100%;
+    display: flex;
+}
+
+/* Scrubber (input range) */
+.progress-bar {
+    appearance: none;
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 10px;
+    background-color: transparent; /* Changed from black to transparent */
+    position: relative;
+    z-index: 3; /* Increased z-index */
+    cursor: pointer;
+    margin: 0;
+}
+
+/* WebKit Thumb */
+.progress-bar::-webkit-slider-thumb {
+    appearance: none;
+    width: 16px; /* Slightly increased size */
+    height: 16px; /* Slightly increased size */
+    background-color: white;
+    border-radius: 50%;
+    cursor: pointer;
+    box-shadow: 0 0 4px rgba(0, 0, 0, 0.5); /* Increased shadow */
+    z-index: 4; /* Highest z-index to ensure it's on top */
+    position: relative;
+}
+
+/* Mozilla Thumb */
+.progress-bar::-moz-range-thumb {
+    width: 16px; /* Slightly increased size */
+    height: 16px; /* Slightly increased size */
+    background-color: white;
+    border: none; /* Remove default border */
+    border-radius: 50%;
+    cursor: pointer;
+    box-shadow: 0 0 4px rgba(0, 0, 0, 0.5); /* Increased shadow */
+    z-index: 4; /* Highest z-index to ensure it's on top */
+    position: relative;
+}
+
+/* Buffered Bar */
+.buffered-bar {
+    position: absolute;
+    top: 0;
+    left: 0;
+    height: 100%;
+    width: 0%;
+    background-color: #aaa;
+    z-index: 1;
+    border-radius: 5px;
+    pointer-events: none;
+}
+
+/* Played Bar */
+.played-bar {
+    position: absolute;
+    top: 0;
+    left: 0;
+    height: 100%;
+    width: 0%;
+    background-color: #3498db;
+    z-index: 2;
+    border-radius: 5px;
+    pointer-events: none;
+}
+
+.time {
+    color: white;
+    font-size: 16px;
+    text-align: center;
+}
+
+.time-container {
+    display: flex;
+    justify-content: space-between;
+    width: 100px;
+}
+
+.volume-container {
+    margin-left: 10px;
+    display: flex;
+    align-items: center;
+}
+
+.volume-icon-container {
+    color: white;
+    width: 20px;
+    text-align: center;
+}
+
+.volume-bar {
+    appearance: none;
+    width: 80px;
+    height: 5px;
+    background-color: #555;
+    border-radius: 5px;
+    outline: none;
+}
+
+.volume-bar::-webkit-slider-thumb {
+    appearance: none;
+    width: 12px;
+    height: 12px;
+    background-color: white;
+    border-radius: 50%;
+    cursor: pointer;
+}
+
+.volume-bar::-moz-range-thumb {
+    width: 12px;
+    height: 12px;
+    background-color: white;
+    border-radius: 50%;
+    cursor: pointer;
+}
+
+.volume-icon {
+    color: white;
+    font-size: 16px;
+}
+
+/* Ensure volume icon stays white during interaction */
+.volume-icon:hover,
+.volume-icon:focus,
+.volume-icon:active,
+.volume-icon-container:hover i,
+.volume-icon-container:focus i,
+.volume-icon-container:active i {
+    color: white;
+}
+
diff --git a/visualizer/static/index.html b/visualizer/static/index.html
new file mode 100644
index 0000000000000000000000000000000000000000..cd3a999a6407529c85e7d35c39048fe2ce88618e
--- /dev/null
+++ b/visualizer/static/index.html
@@ -0,0 +1,144 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>FürElise Dataset Visualizer</title>
+    <!-- Bootstrap CSS -->
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
+    <!-- Font Awesome for Icons -->
+    <link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro' rel='stylesheet' type='text/css'>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css">
+
+    <style>
+        body {
+            font-family: 'Source Sans Pro', sans-serif;
+            margin: 20px;
+        }
+        th {
+            cursor: pointer;
+        }
+        tr:hover {
+            background-color: #f1f1f1;
+        }
+        th i {
+            margin-left: 10px;
+        }
+    </style>
+</head>
+<body>
+
+<div class="container">
+    <h1 class="my-4 text-center">FürElise Dataset Visualizer</h1>
+    Click any piece to start.
+
+    <!-- Search Input -->
+    <div class="row">
+        <div class="col-md-6 mx-auto">
+            <input type="text" class="form-control" id="searchInput" placeholder="Search by piece ID, name, or composer" onkeyup="searchTable()">
+        </div>
+    </div>
+
+    <!-- Table -->
+    <table class="table table-hover mt-4">
+        <thead class="table-dark">
+            <tr>
+                <th scope="col" onclick="sortTable(0)">Piece ID <i class="fas fa-sort"></i></th>
+                <th scope="col" onclick="sortTable(1)">Piece Name <i class="fas fa-sort"></i></th>
+                <th scope="col" onclick="sortTable(2)">Composer <i class="fas fa-sort"></i></th>
+            </tr>
+        </thead>
+        <tbody id="piecesTable"></tbody>
+    </table>
+</div>
+
+<!-- Bootstrap JS (for responsive elements) -->
+<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
+
+<script>
+    let sortDirections = [true, true, true];  // True for ascending, false for descending for each column
+
+    // Load the JSON data from a local file
+    async function loadJSON() {
+        const response = await fetch('/pieces_metadata'); // Ensure 'pieces_metadata.json' is in the same directory
+        const pieces = await response.json();
+        return pieces;
+    }
+
+    // Generate the table rows from the fetched JSON data
+    function loadTable(pieces) {
+        const table = document.getElementById('piecesTable');
+        pieces.forEach(piece => {
+            let row = document.createElement('tr');
+            row.innerHTML = `
+                <td>${piece.piece_id}</td>
+                <td><a href="/vis?id=${piece.piece_id}" class="text-decoration-none">${piece.name}</a></td>
+                <td>${piece.composer}</td>
+            `;
+            table.appendChild(row);
+        });
+    }
+
+    // Sort table based on columns
+    function sortTable(columnIndex) {
+        const table = document.getElementById('piecesTable');
+        let rows = Array.from(table.getElementsByTagName('tr'));
+
+        const ascending = sortDirections[columnIndex];
+        rows.sort((a, b) => {
+            const aText = a.cells[columnIndex].textContent.trim();
+            const bText = b.cells[columnIndex].textContent.trim();
+
+            // Sort piece_id as numbers
+            if (columnIndex === 0) {
+                return ascending ? aText - bText : bText - aText;
+            }
+            // Sort by text for other columns
+            return ascending ? aText.localeCompare(bText) : bText.localeCompare(aText);
+        });
+
+        // Toggle the sort direction for next click
+        sortDirections[columnIndex] = !ascending;
+
+        // Clear the table and re-append the sorted rows
+        table.innerHTML = '';
+        rows.forEach(row => table.appendChild(row));
+
+        // Update sort icons
+        updateSortIcons(columnIndex, ascending);
+    }
+
+    // Update the sort icons
+    function updateSortIcons(columnIndex, ascending) {
+        const ths = document.querySelectorAll('th');
+        ths.forEach((th, i) => {
+            const icon = th.querySelector('i');
+            if (i === columnIndex) {
+                icon.className = ascending ? 'fas fa-sort-up' : 'fas fa-sort-down';  // Show up or down arrow
+            } else {
+                icon.className = 'fas fa-sort';  // Reset other columns to neutral
+            }
+        });
+    }
+
+    // Search function for filtering rows
+    function searchTable() {
+        const input = document.getElementById('searchInput').value.toLowerCase();
+        const rows = document.querySelectorAll('#piecesTable tr');
+
+        rows.forEach(row => {
+            const pieceID = row.cells[0].textContent.toLowerCase();
+            const name = row.cells[1].textContent.toLowerCase();
+            const composer = row.cells[2].textContent.toLowerCase();
+            row.style.display = pieceID.includes(input) || name.includes(input) || composer.includes(input) ? '' : 'none';
+        });
+    }
+
+    // Initialize the table on page load
+    loadJSON().then(pieces => {
+        loadTable(pieces);
+    });
+</script>
+
+</body>
+</html>
diff --git a/visualizer/static/js/vis.js b/visualizer/static/js/vis.js
new file mode 100644
index 0000000000000000000000000000000000000000..c423e0c1e4a0c8c8a62d1817965abbf61c2ae69d
--- /dev/null
+++ b/visualizer/static/js/vis.js
@@ -0,0 +1,682 @@
+import * as THREE from 'https://cdn.jsdelivr.net/npm/three@0.153.0/build/three.module.js';
+import {OrbitControls} from 'https://cdn.jsdelivr.net/npm/three@0.153.0/examples/jsm/controls/OrbitControls.js';
+import {TrackballControls} from 'https://cdn.jsdelivr.net/npm/three@0.153.0/examples/jsm/controls/TrackballControls.js';
+import {OBJLoader} from 'https://cdn.jsdelivr.net/npm/three@0.153.0/examples/jsm/loaders/OBJLoader.js';
+import {MTLLoader} from 'https://cdn.jsdelivr.net/npm/three@0.153.0/examples/jsm/loaders/MTLLoader.js';
+import {RGBELoader} from 'three/addons/loaders/RGBELoader.js';
+import {GUI} from 'three/addons/libs/lil-gui.module.min.js';
+
+// Get the audio element
+const audioElement = document.getElementById("audio");
+// Set the src of the audio element
+
+const urlParams = new URLSearchParams(window.location.search);
+let pieceId = parseInt(urlParams.get('id'));
+if (!pieceId) {
+    pieceId = 0;
+}
+console.log("Piece ID:", pieceId);
+audioElement.src = `/audio/${pieceId}`;
+let totalFrames = 0;
+let totalDuration = -1;
+let loadedFrames = 0;
+let keyObjs = {};
+
+
+document.getElementById('volumeControl').addEventListener('input', () => {
+    audio.volume = volumeControl.value;
+    if (audio.volume === 0) {
+        volumeIcon.className = 'fas fa-volume-mute';  // Mute icon
+    } else if (audio.volume <= 0.5) {
+        volumeIcon.className = 'fas fa-volume-down';  // Lower volume icon
+    } else {
+        volumeIcon.className = 'fas fa-volume-up';  // Full volume icon
+    }
+});
+
+async function fetchMetaData() {
+    const url = `/metadata/${pieceId}`;
+    // read the data from
+    const response = await fetch(url);
+    const jsonData = await response.json();  // Parse JSON response
+    return jsonData;
+}
+
+async function fetchFacesData() {
+    const url = `/mano_faces_data`;
+    const response = await fetch(url);
+    const jsonData = await response.json();
+    return jsonData;
+}
+
+// Define IndexedDB setup
+const dbName = "MeshFramesDB";
+let db;
+
+// Define an array of 2000 frames
+let frames = new Array(2000);
+// define preloadFrames
+let preloadedFrames = {};
+const preloadedWindowSize = 600;
+
+// Function to preload a window of frames
+async function preloadFramesAround(currentFrameIndex) {
+    const startFrame = currentFrameIndex
+    const endFrame = Math.min(totalFrames, currentFrameIndex + preloadedWindowSize);
+
+    // Loop through the frames in the window and preload them
+    for (let i = startFrame; i < endFrame; i++) {
+        if (!preloadedFrames[i]) {  // If frame is not already loaded
+            try {
+                const frameData = await getFrameFromDB(i);
+                preloadedFrames[i] = frameData;
+            } catch (error) {
+                console.error(`Error preloading frame ${i}:`, error);
+            }
+        }
+    }
+
+    // Remove frames that are too old from the object
+    Object.keys(preloadedFrames).forEach(frameIndex => {
+        if (frameIndex < startFrame || frameIndex > endFrame) {
+            delete preloadedFrames[frameIndex];
+        }
+    });
+}
+
+function getPreloadedFrame(frameIndex) {
+    return preloadedFrames[frameIndex];
+}
+
+// Open or create IndexedDB database
+async function openDB() {
+    await deleteDatabase();
+    return new Promise((resolve, reject) => {
+        const request = indexedDB.open(dbName, 1);
+
+        request.onupgradeneeded = (event) => {
+            db = event.target.result;
+            // Create an object store for frames with the frame index as the key
+            const objectStore = db.createObjectStore("frames", {keyPath: "index"});
+        };
+
+        request.onsuccess = (event) => {
+            db = event.target.result;
+            console.log("IndexedDB opened successfully");
+            resolve();
+        };
+
+        request.onerror = (event) => {
+            console.error("Error opening IndexedDB:", event.target);
+            reject();
+        };
+    });
+}
+
+function deleteDatabase() {
+    return new Promise((resolve, reject) => {
+        const deleteRequest = indexedDB.deleteDatabase(dbName);
+
+        deleteRequest.onsuccess = () => {
+            console.log("Database deleted successfully.");
+            resolve();
+        };
+
+        deleteRequest.onerror = (event) => {
+            console.error("Error deleting database:", event.target.errorCode);
+            reject();
+        };
+
+        deleteRequest.onblocked = () => {
+            console.warn("Database deletion blocked. Close other tabs using this database.");
+        };
+    });
+}
+
+function printAllFramesInDB() {
+    return new Promise((resolve, reject) => {
+        const transaction = db.transaction(["frames"], "readonly");
+        const objectStore = transaction.objectStore("frames");
+
+        const allFrames = [];
+        const request = objectStore.openCursor();  // Open a cursor to iterate over all entries
+
+        request.onsuccess = (event) => {
+            const cursor = event.target.result;
+            if (cursor) {
+                // Add frame data to array and print it
+                allFrames.push(cursor.value);
+                cursor.continue();  // Move to the next entry
+            } else {
+                console.log("All frames in the database:", allFrames);  // Print entire array after iteration
+                resolve(allFrames);  // Resolve the promise with all the frame data
+            }
+        };
+
+        request.onerror = (event) => {
+            console.error("Error reading from IndexedDB:", event.target.errorCode);
+            reject(event.target.errorCode);
+        };
+    });
+}
+
+function storeFrameInDB_(frameIndex, frameData) {
+    frames[frameIndex] = frameData;
+    return Promise.resolve();
+}
+
+// Store frame in IndexedDB
+function storeFrameInDB(frameIndex, frameData) {
+    // console.log("Storing frame:", frameIndex);
+    return new Promise((resolve, reject) => {
+        const transaction = db.transaction(["frames"], "readwrite");
+        const objectStore = transaction.objectStore("frames");
+        const request = objectStore.add({index: frameIndex, data: frameData});
+
+        request.onsuccess = () => {
+            resolve();
+        };
+
+        request.onerror = (event) => {
+            console.error("Error storing frame:", event.target, event);
+            reject();
+        };
+    });
+}
+
+function getFrameFromDB_(frameIndex) {
+    const frameData = frames[frameIndex];
+    if (frameData) {
+        return Promise.resolve(frameData);
+    } else {
+        // throw an error
+        return Promise.reject("Frame not found in IndexedDB");
+    }
+}
+
+// Retrieve frame from IndexedDB
+function getFrameFromDB(frameIndex) {
+    return new Promise((resolve, reject) => {
+        const transaction = db.transaction(["frames"], "readonly");
+        const objectStore = transaction.objectStore("frames");
+        const request = objectStore.get(frameIndex);
+
+        request.onsuccess = (event) => {
+            if (event.target.result) {
+                resolve(event.target.result.data);
+            } else {
+                reject("Frame not found in IndexedDB");
+            }
+        };
+
+        request.onerror = (event) => {
+            console.error("Error retrieving frame:", event.target, "Frame index:", frameIndex);
+            reject();
+        };
+    });
+}
+
+// Fetch mesh data and store in IndexedDB
+async function fetchMeshData() {
+    const url = `/mano_vertices_data/${pieceId}`;
+    const response = await fetch(url);
+
+    if (!response.ok) {
+        throw new Error(`HTTP error! Status: ${response.status}`);
+    }
+
+    const reader = response.body.getReader();
+    const decoder = new TextDecoder("utf-8");
+    let buffer = "";  // Buffer to hold incoming data
+
+    const loadingText = document.getElementById('loadingText');
+
+    let startTime = Date.now();  // Record the start time
+
+    while (true) {
+        const {done, value} = await reader.read();
+
+        if (done) {
+            break;
+        }
+
+        const chunkText = decoder.decode(value, {stream: true});
+        buffer += chunkText;
+
+        let parts = buffer.split('\n');
+        buffer = parts.pop();  // Keep incomplete part in buffer
+
+        // Sequential processing using for...of
+        for (const frameJson of parts) {
+            try {
+                const frameData = JSON.parse(frameJson);
+                // console.log("Processing frame:", loadedFrames);  // Debugging line
+
+                // Store frame in IndexedDB sequentially
+                await storeFrameInDB(loadedFrames, frameData);
+                loadedFrames++;  // Increment after storing the frame
+
+                const percentage = (loadedFrames / totalFrames) * 100;
+                document.getElementById('bufferedBar').style.width = percentage + '%';
+
+
+                const elapsedTime = (Date.now() - startTime) / 1000;
+                const loadRate = loadedFrames / elapsedTime;
+                const framesRemaining = totalFrames - loadedFrames;
+                const timeRemaining = framesRemaining / loadRate;
+                const minutes = Math.floor(timeRemaining / 60);
+                const seconds = Math.floor(timeRemaining % 60);
+
+                const elapsedTimeMinutes = Math.floor(elapsedTime / 60);
+                const elapsedTimeSeconds = Math.floor(elapsedTime % 60);
+
+                let text = `Loading... ${Math.floor(percentage)}% <br />`
+                text += `ETA: ${minutes}m ${seconds}s <br />`
+                text += `Elapsed time: ${elapsedTimeMinutes}m ${elapsedTimeSeconds}s`;
+                loadingText.innerHTML = text;
+            } catch (e) {
+                console.error("Error parsing/storing frame:", e);
+            }
+        }
+    }
+
+    loadingText.innerHTML = 'Loading... 100% <br /> Elapsed time: ' + Math.floor((Date.now() - startTime) / 1000) + 's';
+}
+
+// Fetch frame from IndexedDB for rendering
+async function fetchFrameForRendering(frameIndex) {
+    try {
+        const frameData = await getFrameFromDB(frameIndex);
+        return frameData;
+    } catch (error) {
+        console.error("Error fetching frame for rendering:", error, "Frame index:", frameIndex);
+        return null;
+    }
+}
+
+
+async function main() {
+    console.log("Starting application");
+    // Setup the scene, camera, and renderer
+    const scene = new THREE.Scene();
+    const gui = new GUI();
+    const camera = new THREE.PerspectiveCamera(35, window.innerWidth / window.innerHeight, 0.1, 1000);
+    const renderer = new THREE.WebGLRenderer({canvas: document.getElementById('threeCanvas'), antialias: true});
+    renderer.setSize(window.innerWidth, window.innerHeight);
+    document.body.appendChild(renderer.domElement);
+
+
+    const pmremGenerator = new THREE.PMREMGenerator(renderer);
+
+    const hdriLoader = new RGBELoader()
+    hdriLoader.load("resources/envmap.hdr", function (texture) {
+        const envMap = pmremGenerator.fromEquirectangular(texture).texture;
+        texture.dispose();
+        scene.environment = envMap;
+        scene.background = envMap;
+        scene.backgroundBlurriness = 0.3;
+    });
+
+    const renderingParams = {
+        handColor: 0xefceb9,
+    }
+    // gui.addColor(renderingParams, 'handColor').onChange((value) => {
+    //     leftMesh.material.color.setHex(value);
+    //     rightMesh.material.color.setHex(value);
+    //     leftMaterial.material.needsUpdate = true;
+    //     rightMaterial.material.needsUpdate = true;
+    // });
+
+
+    const hemiLight = new THREE.HemisphereLight(0xffffff, 0x8d8d8d, 3);
+    hemiLight.position.set(0, 20, 0);
+    // scene.add(hemiLight);
+
+    const dirLight = new THREE.DirectionalLight(0xffffff, 3);
+    dirLight.position.set(3, 10, 10);
+    dirLight.castShadow = false;
+    // scene.add(dirLight);
+
+    // Setup OrbitControls
+    const pianoCenter = new THREE.Vector3(0.61431422, -0.074, -0.0055);
+    const controls = new OrbitControls(camera, renderer.domElement);
+    controls.rotateSpeed = 0.5;
+    // const controls = new TrackballControls(camera, renderer.domElement);
+    // controls.rotateSpeed = 2.0;
+    controls.enableDamping = true;
+    controls.dampingFactor = 0.25;
+    controls.screenSpacePanning = false;
+    controls.minDistance = 0;
+    controls.maxDistance = Infinity;
+    // Define preset viewpoints
+    const presets = {
+        top: {
+            position: {
+                "x": 0.10415014734151176,
+                "y": 1.2303206276916157,
+                "z": -0.5999895298700443
+            }, target: {
+                "x": 0.1,
+                "y": 0,
+                "z": -0.6
+            }
+        },
+        left: {
+            position: {
+                "x": 0.6998938717565077,
+                "y": 1.0171497080001928,
+                "z": 0.5578656721849795
+            },
+            target: {
+                "x": 0.13180072175419472,
+                "y": 1.5691260771514555e-19,
+                "z": -0.5241889198249452
+            },
+        },
+        right: {
+            position: {
+                "x": 0.6027349580836255,
+                "y": 0.818198927359689,
+                "z": -1.8632773667524538
+            }, target: {
+                "x": 0.06154058571770953,
+                "y": 1.6977216676322782e-18,
+                "z": -0.8159637729174926
+            }
+        }
+    };
+
+// Function to update camera and controls
+    function updateCameraAndControls(preset) {
+        camera.position.set(preset.position.x, preset.position.y, preset.position.z);
+        controls.target.set(preset.target.x, preset.target.y, preset.target.z);
+        controls.update();
+    }
+
+    // Set up GUI
+    // const cameraFolder = gui.addFolder('Camera Presets');
+    // // open the folder by default
+    // cameraFolder.open();
+    const cameraSettings = {
+        preset: 'top'
+    };
+
+    gui.add(cameraSettings, 'preset', Object.keys(presets))
+        .name('Camera Presets')
+        .onChange((value) => {
+            updateCameraAndControls(presets[value]);
+        });
+    updateCameraAndControls(presets.top);
+    // Load all meshes
+    // Create materials
+    const whiteMaterial = new THREE.MeshStandardMaterial({
+        color: 0xffffff,
+        roughness: 0.3,
+        metalness: 0.2
+    });
+
+    const blackMaterial = new THREE.MeshStandardMaterial({
+        color: 0x000000,
+        roughness: 0.4,
+        metalness: 0.1
+    });
+    for (let i = 0; i < 88; i++) {
+        const objLoader = new OBJLoader();
+        const mtlLoader = new MTLLoader();
+
+        const mesh_url = `/piano_mesh/${i}`;
+        mtlLoader.load(mesh_url + '.mtl', function (materials) {
+            materials.preload();
+            const mat = Object.values(materials.materials)[0];
+            if (isBlackKey(i + 1)) {
+                mat.color.setHex(0x000000);
+            } else {
+                mat.color.setHex(0xffffff);
+            }
+            objLoader.setMaterials(materials);
+            objLoader.load(mesh_url + '.obj', function (object) {
+                object.traverse((child) => {
+                    if (child instanceof THREE.Mesh) {
+                        // Apply PBR materials
+                        child.material = isBlackKey(i + 1) ? blackMaterial.clone() : whiteMaterial.clone();
+
+                        // Enable shadows
+                        child.castShadow = true;
+                        child.receiveShadow = true;
+                    }
+                });
+                // rotate object 90 along x axis
+                object.rotation.x = Math.PI / 2;
+                scene.add(object);
+                keyObjs[i] = object;
+            });
+        });
+    }
+    // Fetch the mesh data (vertices and faces)
+    const metadata = await fetchMetaData();
+    totalFrames = metadata.num_frames;
+    document.getElementById('pieceInformation').innerHTML = `${metadata.name} <br /> by ${metadata.composer}`
+    const fps = 60000 / 1001;
+    totalDuration = totalFrames / fps;
+    // update the duration of the audio
+    const minutes = Math.floor(totalDuration / 60);
+    const seconds = Math.floor(totalDuration % 60).toString().padStart(2, '0');
+    document.getElementById('totalDuration').textContent = `${minutes}:${seconds}`;
+    fetchMeshData();
+    // wait until frames have more than 600 frames
+    const preloadFrames = 60
+    while (loadedFrames < preloadFrames) {
+        await new Promise(resolve => setTimeout(resolve, 1000));
+    }
+
+    const facesData = await fetchFacesData();
+    // Extract vertices and faces for the left and right meshes
+    const leftFaces = facesData.left_faces.flat();
+    const rightFaces = facesData.right_faces.flat();
+
+    // Ensure vertices are set for the first frame
+    const leftGeometry = new THREE.BufferGeometry();
+    const rightGeometry = new THREE.BufferGeometry();
+    const numVertices = 778;
+
+    const leftPositionAttribute = new Float32Array(numVertices * 3);
+    const rightPositionAttribute = new Float32Array(numVertices * 3);
+
+    leftGeometry.setAttribute('position', new THREE.BufferAttribute(leftPositionAttribute, 3));
+    rightGeometry.setAttribute('position', new THREE.BufferAttribute(rightPositionAttribute, 3));
+
+    leftGeometry.setIndex(leftFaces);
+    rightGeometry.setIndex(rightFaces);
+
+
+    const leftMaterial = new THREE.MeshStandardMaterial({
+        // a color that resembs hand
+        color: renderingParams.handColor,
+        roughness: 1.0,
+        metalness: 1.0
+    });
+
+    const rightMaterial = leftMaterial.clone();
+
+    // const leftMaterial = new THREE.MeshBasicMaterial({ color: 0xff0000});
+    // const rightMaterial = new THREE.MeshBasicMaterial({ color: 0x0000ff});
+
+    const leftMesh = new THREE.Mesh(leftGeometry, leftMaterial);
+    leftMesh.frustumCulled = false;
+    const rightMesh = new THREE.Mesh(rightGeometry, rightMaterial);
+    rightMesh.frustumCulled = false;
+
+    scene.add(leftMesh);
+    scene.add(rightMesh);
+
+
+    // camera.rotation.z = Math.PI / 2;
+    console.log("Camera position:", camera.position);
+    let axesHelper = new THREE.AxesHelper(20);
+    axesHelper.rotation.x = Math.PI / 2;
+    // scene.add(axesHelper);
+
+    scene.rotation.x = -Math.PI / 2;
+
+    let currentFrame = 0;
+
+    // Initialize audio
+    const audio = document.getElementById('audio');
+    const playButton = document.getElementById('playPauseBtn');
+    const playPauseIcon = document.getElementById('playPauseIcon');
+    const scrubber = document.getElementById('scrubber');
+    const bufferedBar = document.getElementById('bufferedBar');
+
+    function isBlackKey(idx) {
+        const blackKey = [1, 3, 6, 8, 10];
+        // Ensure positive modulo and check if it matches a black key
+        return blackKey.includes((idx + 8) % 12);
+    }
+
+    let isPlaying = false;
+    // Play the audio
+    playButton.addEventListener('click', () => {
+        if (isPlaying) {
+            audio.pause();
+            playPauseIcon.className = 'fas fa-play';  // Change to pause icon
+
+        } else {
+            audio.play();
+            playPauseIcon.className = 'fas fa-pause';  // Change to play icon
+        }
+        isPlaying = !isPlaying;
+    });
+
+    // Animation loop at 60fps
+    const interval = 1000 / fps;
+
+
+    // Periodically preload frames in the background (does not affect the rendering loop)
+    setInterval(() => {
+        const currentTime = audio.currentTime;
+        const frameIndex = Math.floor(currentTime * fps);
+        preloadFramesAround(frameIndex);
+    }, 500);  // Preload frames every 500 milliseconds
+
+    // a polling function for starting the animation when the frames are loaded
+    async function playOnLoad(frameIndex) {
+        if (!isPlaying) {
+            return;
+        }
+        try {
+            const frameData = await getFrameFromDB(frameIndex);
+            if (frameData) {
+                audio.play();
+            } else {
+                setTimeout(() => {
+                    playOnLoad(frameIndex);
+                }, 500);
+            }
+        } catch (error) {
+            console.error("Error playing on load:", error);
+        }
+    }
+
+    // Synchronization logic
+    function syncAnimationAndAudio() {
+        const currentTime = audio.currentTime;
+        const frameIndex = Math.floor(currentTime * fps);
+        if (frameIndex >= totalFrames) {
+            audio.pause();
+            return;
+        }
+        const frameDataThis = getPreloadedFrame(frameIndex);
+        if (!frameDataThis) {
+            audio.pause();
+            playOnLoad(frameIndex);
+            return;
+        }
+        // Update left mesh vertices for the current frame
+        for (let i = 0; i < numVertices; i++) {
+            for (let j = 0; j < 3; j++) {
+                leftPositionAttribute[i * 3 + j] = frameDataThis.left_vertices[i][j];
+                rightPositionAttribute[i * 3 + j] = frameDataThis.right_vertices[i][j];
+            }
+        }
+
+
+        leftGeometry.computeVertexNormals();
+        rightGeometry.computeVertexNormals();
+
+        leftGeometry.attributes.position.needsUpdate = true;
+        rightGeometry.attributes.position.needsUpdate = true;
+
+
+        for (let i = 0; i < 88; i++) {
+            const obj = keyObjs[i];
+            const mat = keyObjs[i].children[0].material;
+            if (frameDataThis.pressed_keys[i] > 0) {
+                mat.color.setHex(0x00ff00);
+                // also rotate the key
+                obj.rotation.z = -Math.PI / 45;
+            } else {
+                obj.rotation.z = 0;
+                if (isBlackKey(i + 1)) {
+                    mat.color.setHex(0x000000);
+                } else {
+                    mat.color.setHex(0xffffff);
+                }
+            }
+            mat.needsUpdate = true;
+        }
+        // Update the scrubber position
+        scrubber.value = (currentTime / totalDuration) * 100;
+        document.getElementById('timeDisplay').textContent = `${Math.floor(currentTime / 60)}:${Math.floor(currentTime % 60).toString().padStart(2, '0')}`;
+        document.getElementById('playedBar').style.width = scrubber.value + "%";
+    }
+
+    audio.ontimeupdate = syncAnimationAndAudio;
+
+    scrubber.addEventListener('input', () => {
+        const scrubberValue = scrubber.value;
+        const newTime = scrubberValue / 100 * totalDuration;
+        audio.currentTime = newTime;
+        syncAnimationAndAudio();
+    });
+
+
+    function logCameraSettings() {
+        console.log("Camera position:", camera.position);
+        console.log("Camera rotation:", camera.rotation);
+        console.log("Camera zoom", camera.zoom);
+        console.log("Controls target", controls.target);
+    }
+
+    // log camera settings every 5 seconds
+    // setInterval(logCameraSettings, 5000);
+
+    function animate() {
+        syncAnimationAndAudio();
+        controls.update();
+        renderer.render(scene, camera);
+    }
+
+    let lastTime = 0;
+
+    function animationLoop(time) {
+        if (time - lastTime >= interval) {
+            animate();
+            lastTime = time;
+        }
+        requestAnimationFrame(animationLoop);
+    }
+
+    animationLoop(0);
+
+    // Handle window resize
+    window.addEventListener('resize', () => {
+        camera.aspect = window.innerWidth / window.innerHeight;
+        camera.updateProjectionMatrix();
+        renderer.setSize(window.innerWidth, window.innerHeight);
+    });
+}
+
+// Call openDB before starting the application
+openDB().then(() => {
+    main();
+});
diff --git a/visualizer/static/resources/envmap.hdr b/visualizer/static/resources/envmap.hdr
new file mode 100644
index 0000000000000000000000000000000000000000..4fb1b275694d8470997b0f19a66a41dcc969eb89
--- /dev/null
+++ b/visualizer/static/resources/envmap.hdr
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5095c22c076ea51d97966efef0e66f3d09bd073e044a3142e35f3ee71eb301fd
+size 1533412
diff --git a/visualizer/static/vis.html b/visualizer/static/vis.html
new file mode 100644
index 0000000000000000000000000000000000000000..eaa4107ab98bfac05ebf61dbdfa7e2bb0f051c64
--- /dev/null
+++ b/visualizer/static/vis.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>FürElise Dataset Visualizer</title>
+    <link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro' rel='stylesheet' type='text/css'>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css">
+    <link rel="stylesheet" href="css/vis.css">
+</head>
+
+<body>
+<canvas id="threeCanvas"></canvas>
+<div class="info-box">
+    <p id="pieceInformation"></p>
+    <p id="loadingText">Loading...</p>
+</div>
+<!-- Music Player -->
+    <div id="visualizer">
+<div class="player">
+    <!-- Play/Pause Button -->
+    <button id="playPauseBtn">
+        <i id="playPauseIcon" class="fas fa-play"></i>
+    </button>
+
+    <!-- Time Display -->
+    <div class="time-container">
+        <div class="time" id="timeDisplay">0:00</div>
+    </div>
+    <!-- Progress Bar -->
+<div class="progress-bar-container">
+    <div id="bufferedBar" class="buffered-bar"></div>
+    <div id="playedBar" class="played-bar"></div>
+    <input type="range" id="scrubber" class="progress-bar" value="0" min="0" max="100" step="0.1">
+</div>
+    <!-- Time Display -->
+    <div class="time-container">
+        <div class="time" id="totalDuration">0:00</div>
+    </div>
+
+    <!-- Volume Control -->
+    <div class="volume-container">
+        <div class="volume-icon-container">
+            <i class="fas fa-volume-up volume-icon" id="volumeIcon"></i>
+        </div>
+        <input type="range" id="volumeControl" class="volume-bar" min="0" max="1" step="0.1" value="1">
+    </div>
+</div>
+        <audio id="audio"></audio>
+    </div>
+
+    <script type="importmap">
+        {
+          "imports": {
+            "three": "https://cdn.jsdelivr.net/npm/three@0.153.0/build/three.module.js",
+            "three/addons/": "https://cdn.jsdelivr.net/npm/three@0.153.0/examples/jsm/"
+          }
+        }
+    </script>
+<script type="module" src="js/vis.js"></script>
+</body>
+
+</html>
\ No newline at end of file