Update app.py

app.py

@@ -106,7 +106,7 @@ def run(search_prompt, mid=None):
             yield mid_seq, None, None, [create_msg("visualizer_append", mid_seq[i]), create_msg("progress", [i + 1, len(mid_seq)])]
 
     with open(f"output.mid", 'wb') as f:
-        f.write(MIDI.score2midi(mid_seq))
+        f.write(MIDI.score2midi([mid_seq_ticks, [mid_seq]]))
     audio = synthesis(MIDI.score2opus([mid_seq_ticks, [mid_seq]]), soundfont_path)
     yield mid_seq, "output.mid", (44100, audio), [create_msg("visualizer_end", None)]