Update app.py

app.py

@@ -86,6 +86,9 @@ def mix_chord(chord, tones_chord, mel_patch, mel_pitch, next_note_dtime):
           
         c = copy.deepcopy(cg[0])
           
+        if cg[0][2] > next_note_dtime:
+            c[2] = next_note_dtime - 1
+            
         c[4] = mel_pitch
         c[5] = 105 + (mel_pitch % 12)
           
@@ -106,7 +109,7 @@ def mix_chord(chord, tones_chord, mel_patch, mel_pitch, next_note_dtime):
           c = copy.deepcopy(cc)
             
           if cc[2] > next_note_dtime:
-              c[2] = next_note_dtime
+              c[2] = next_note_dtime - 1
               
           c[4] = ((c[4] // 12) * 12) + tchord[i]
           c[5] += c[4] % 12