Wow, you got way more info here than I could have provided!

Here's the "dare to compare" page, offering demo sounds from different synths:

http://www.pgmusic.com/dare_to_compare.htm

I think BIAB will do what you want, but your back won't just be a guitar strumming, but an entire band. You can, of course, mute anything you don't want. There's probably a video "Intro to Band In A Box" in the support section - probably worth a look to try to get some basic idea what the program can do.

Bruce


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