I finally got around to installing 'MMA: Musical Midi Accompaniment' and tinkering a little bit, and like much open source software it appears to be very powerful with a steep learning curve. Documentation seems to be pretty good but there is little to no hand-holding to be found, and no visible development community/roadmap. (Python 2 EOL is 6 days away... will MMA ever be updated for Python 3? 🤷♂️) https://www.mellowood.ca/mma/index.html
That being said, the '2beatpa' groove is *exactly* the simple piano comping pattern I was hoping to find (left hand single bass note, right hand single chord.)
I think there's a similar "oompah" bass pattern defined somewhere but it looks like I'll need to create a custom groove to isolate it.
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