Update app.py

app.py

@@ -248,7 +248,7 @@ def GenerateDrums(input_midi, input_num_tokens):
     print('-' * 70)
     print('Req execution time:', (reqtime.time() - start_time), 'sec')
     
-    return output_midi_title, output_midi_summary, output_midi, output_audio, output_plot
+    return [output_midi_title, output_midi_summary, output_midi, output_audio, output_plot]
 
 # =================================================================================================