I think the simplest solution and the most rewarding for users would be to do a series of special real track recordings creating a lot of differents intros, fills, endings etc. Much like the preprogrammed midi intros and endings on a nice keyboard.

Forinstance have a instrument play a nice intro for a jazz style, create one or two fills per style, then have 1-4 endings to choose from per style. These should be set up to generate just like the real tracks do now, based upon key, tempo, range, etc.

I would think that would be the simplest means of acheiving holds that sound natural, as well as abrupt stops, etc.

These could be marketed as a seperate product or as an add on to real track set for which they were specifically created, but could also often be used with other similar sets.

Any ideas??????????