In a studio when recording a live musician's track, it is customary to do several takes covering the same area, giving the producer some choices at mixdown.

This feature is the Realtracks' equivalent of that.

Every once in a while I will hear one part of one of the selections and another part of another and want them both, so I will tell RB to place one on one track and the other on another, then I can use Volume Envelopes in the pianoroll view to bring one down and the other up at the right time.

--Mac