Hello, I upgraded to the 2019 Mac version. I am unable to hear the melody track when playing a song containing a melody. The style instruments sound fine. When I port this file over to Logic, the melody plays fine. I'm unable to set things up to hear the melody in BIAB

OS X El Capitan version 10.11.6
Imac processor 3.06 GHz inelCore 2 Duo
Memory 4GB
1TB hard drive