Update app.py

app.py

@@ -126,7 +126,25 @@ def render_midi(input_midi, render_type, soundfont_bank, render_sample_rate, cus
         output_score = []
 
         for c in cscore:
-            output_score.extend(c)
+            tones_chord = sorted(set([t[4] % 12 for t in c if t[3] != 9]))
+            drums_events = [t for t in c if t[3] == 9]
+
+            if tones_chord:
+                
+                new_tones_chord = TMIDIX.check_and_fix_tones_chord(tones_chord)
+                
+                if len(c) > 1:
+                    output_score.extend([c[0]])
+                    for cc in c[1:]:
+                        if cc[3] != 9:
+                            if (cc[4] % 12) in new_tones_chord:
+                                output_score.extend([cc])
+                    output_score.extend(drums_events)
+                else:
+                    
+                    output_score.extend([c[0]])
+            else:
+                output_score.extend(c)
 
     print('Done processing!')
     print('=' * 70)