Update app.py

app.py

@@ -265,7 +265,7 @@ def generate_music(
     mix_stem = (vocal_audio[1] + instrumental_audio[1]) / 1 # mixing by summing and dividing
     mixed_audio = (vocal_audio[0], mix_stem) # same sample rate
 
-    return (sr, (mix_stem * 32767).astype(np.int16)), None, None
+    return (vocal_audio[0], (mix_stem * 32767).astype(np.int16)), None, None
 
 def infer(genre_txt_content, lyrics_txt_content, num_segments=2, max_new_tokens=15):
     # Execute the command