Update app.py

app.py

@@ -257,7 +257,7 @@ if __name__ == "__main__":
             example3 = gr.Examples([[1, 0.98, 12], [1.2, 0.95, 8]], [input_temp, input_top_p, input_top_k])
         run_btn = gr.Button("generate", variant="primary")
         stop_btn = gr.Button("stop and output")
-        output_midi_seq = []
+        output_midi_seq = gr.Textbox()
         output_midi_visualizer = gr.HTML(elem_id="midi_visualizer_container")
         output_audio = gr.Audio(label="output audio", format="mp3", elem_id="midi_audio")
         output_midi = gr.File(label="output midi", file_types=[".mid"])