Just wanted to make sure we are aware of what BIAB already has:

In the Practice icon, Practice Central, Transpose Songs, you can set each chorus to transpose by X semitones.

I tried it using a chorus of 2 bars (Start=1, End=2), 20 Choruses and a transpose value of 5 semitones as described above.

It sort-of works. I get two bars, then it transposes up a fourth. Then it plays two bars, but sometimes four bars before transposing again around the circle of fourths. I think there is a bug there, possibly caused by such a short "song", but the function shows promise for making your own practice workout routine.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.