Originally Posted By: Matt Finley
This would be terrific.

I have a question: if a track is frozen, it becomes a form of audio file. You see this because of the huge increase in file size. If you then regenerate only a part of that track, won’t you have possible clicks, odd voice leading, and/or register jumps?

Not sure about that but however they do the behind-the-scenes magic with regenerating sections in Realband might work here.