Gear4 Inc. PG465G Pocketloops Compatible with 1st-generation and later iPod touch and iPhone 3G and 4 For use with your preferred Apple device. Loop recording In 1- or 4-bar loops for versatile use. 7 drum kits Create beats for a unique sound. 13 instruments Include synths, organs, pianos and more. Up to 4 instruments per song help build your music. Built-in effects Include echo, chorus and an XY filter pad to adjust tone and dynamics.