I really enjoy the ability to change substyles in a song, but... I'm a little confused about how to use these effectively. For example, the _BOS2SWG "Jazz Piano Trio, Bossa to Swing" allows the substyle to smoothly change from Bossa Nova (A & B) to Swing (C & D). Suppose I have a song with 8 choruses, and want the first 4 to be Bossa Nova and second 4 swing? How would I change from substyle B to D at the beginning of chorus 5?