Well, even though it's a partial generation, which I'm assuming is just having a particular RT generated for certain bars or sections of a song, the generations still won't always work, will they?

But at some point they do tend to repeat so generating a larger number of instances may not yield much variation. Mostly I'm talking about lead instruments - maybe generating a half dozen instances for each depending on the arrangement - typically within all of that audio I can find something that works.

I need to check out PG Music's tutorials on the subject.