I play guitar over my own biab tracks. Pretty similar to your use case.

I use Anytune pro for my mp3 playback at gigs.
My “normal” arrangement is
Intro
Head (melody)
Improv chorus(1 or 2)
Head (restate the melody)
Outtro / ending

I set a loop inside Anytune on the improv section and take it as many times as I need/want

I alsohave a Bluetooth pedal that makes this (and a few other functions) very easy.
Leaves the hands free for playing.


biab2025(Mac) Latest Build
Mac OS (Latest)
Apple Mac Mini M2 pro 32GB Ram
Logic Pro 11.2.2
Irwin Vice Grip Fencing Pliers