Hi,

DP1: Drum Pack 1 - 8 NEW drum programs that are fun to play and interact with. Based on Arpeggiator patterns designed for each individual program, these drum programs groove for you! Change things up simply by playing new notes and moving controllers. Latch any pattern with a pedal and play other drums or perc on top, creating your own grooves instantly! Turn the Arp OFF to play the drum kits normally.

http://kurzweil.com/news/63/