There isn’t a way to generate a solo with specifications as to note lengths etc.

You mentioned you tried partial regen, but that’s the best tool to get what you want.

Partial regen will give you up to 40 variations, that are all different. Highlight a bar, press Ctrl f8. If you don’t like it, press Ctrl-f8 again, up to 40 times,


Have Fun!
Peter Gannon
PG Music Inc.