I use the looper along with a live band, but our drummer sometimes speeds up and slows down, and as a result falls out of synch with the loop. It would be great if, in those situations, I could use the tap tempo to change the tempo and the loop would time-stretch to fit the new tempo. I understand that there are a few other loopers on the market that have this option, including the Boss RC-500 and the Headrush Looperboard.