charlie,

Garageband should do you just fine. I would suggest to drag and drop your BIAB project into Garageband, then to record MIDI piano data as you play along. Then you should be able to tell Garageband to use your Ivory standalone for the piano (to provide the sound for your piano part. This way, you wouldn't need to record your speakers with a microphone (which is what I'm assuming you're doing now), and you can play BIAB out loud while you're playing/recording.

Bruce


Macbook Pro 2018
2.6 GHz 6-core Intel Core i7, 16 GB RAM
OS Monterey
BIAB for Mac 2022