Check out the BB Yahoogroup and look for the folder 'demos' in the files section. You'll find a file demonstrating the how-to via Band-in-a-Box and explaining the pertient steps in its memo field. Download the file -> 'Expression demo for accompaniment tracks.MGX' and have it closely inspected via BB. Note, the pertinent Control data sit on the melody track in BB.

Opening this file in RealBand does *not* reproduce the fading effects noticeable via Band-in-a-Box. The pertinent Control data are on the melody track and the channels likely don't match the piano or drums channels, say. Just repeating the steps that created this BB file in the first place, just now within RealBand, should get you to second base, though.

Martin