Update app.py

app.py

@@ -58,7 +58,7 @@ def postprocess(txt, path):
     for line in txt.split('\n'):
         # we need to ignore the invalid output by the model
         try:
-            pitch, duration, wait, velocity, instrument = line.split()
+            pitch, duration, wait, velocity, instrument = line.split(',')
             pitch, duration, wait, velocity = [int(x) for x in [pitch, duration, wait, velocity]]
             if instrument not in tracks:
                 tracks[instrument] = symusic.core.TrackSecond()