Troubleshooting
The accompaniment is too quiet.
When playing a piece, if the accompaniment is too quiet, adjust the Accomp. Volume slider in the rehearsal controls window:
When editing a rehearsal for audio export, go to the Audio Mix panel in the Review window and adjust the volume for the accompaniment. Make sure the accompaniment is not muted and the volume is high enough.
If you are using external speakers, make sure the volume level is high enough.