Update app.py

app.py

@@ -94,16 +94,14 @@ def mix_chord(chord, tones_chord, mel_patch, mel_pitch, next_note_dtime):
 
         tclen = len(tones_chord)
 
-        tchord = []
-
         if len(tones_chord) == 1:
-            tchord = sorted(tones_chord + [tones_chord[0] + 7])
-        
-        else:
-            tchord = tones_chord
+            tones_chord = sorted(tones_chord + [tones_chord[0] + 7])
 
         if len(cg) > tclen:
           tchord = tones_chord + [random.choice(tones_chord) for _ in range(len(cg)-tclen)]
+        
+        else:
+          tchord = tones_chord
 
         seen = []