Update app.py

app.py

@@ -208,7 +208,7 @@ def Generate_Chords_Progression(minimum_song_length_in_chords_chunks,
 
         ctimes = sorted(set([e[1] for e in output_score if e[3] != 9]))
 
-        for i, e in enumerate(chords_labels):
+        for i, e in enumerate(chords_labels[:len(ctimes)]):
             e[1] = ctimes[i]
 
     midi_score = sorted(chords_labels + output_score, key=lambda x: x[1])