I do this all the time in a DAW. You have written a horn part. Now copy it to the bass track, then lower it an octave or two or three until it will play in the bass register.

I have taken parts of a piano track, raised it an couple of octaves and put it in a harp track. i have changed many instruments this using this technique.

You can do a lot of this type of thing in a DAW that you can't do or easily can't do in BiaB.

I just posted a selfie and all of the responses were get well soon!

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware