I've recorded about 15 backing tracks for my band and I'm finding that I wish I would have put a blank 4 count measure in front of all the tracks. Easy enough to change the drum arraignment but not the rest of the tracks or maybe I'm missing something here. There is nothing in the manual that deals specifically with inserting a measure (or 2 or 3) after the song has been recorded. Can any BR-600 guru's give me any suggestions? Thanks!