I'd love to be able to dictate exactly where in a song the soloist plays, e.g. in measures following a phrase in the melody, as a "response" to the melody, then lay out for a few measures, then come back in later and play another response, then lay out again, etc. Being able to assign this to the first/last chorus only, while allowing the soloist to play full middle choruses, would be lovely. And, best of all, if I could choose which measures in *any* chorus that the soloist would play in, I'd have much better control of the entire solo.