Hi Andrew, Thanks very much for replying.

If I open a new song with all of the standard defaults, but only change the number of choruses to 1, then choose style #1 (bebop sax), everything works fine. I can generate new portions of a previously generated solo and the old portions play back correctly.

But, if I do the same thing, but choose realtracks style 618 (background fiddle), any solo I previously generated doesn't play back, but does show up in the notation window. If I save and re-open the same song, I still only get play back of the last solo I generated.

I am using a new MacBook Pro with system 10.6.3.

BTW, I have used BIAB for many years and it is one of my favorite all time Mac programs.