Advanced Media Group has announced it will soon release its latest product for users of Apple’s GarageBand. The ExpansionPack for GarageBand will bring over 70 new instruments to GarageBand users, including Rhodes pianos, Wurlitzer organs, classic synths, and a full brass section with many instruments that have never before been available in GarageBand. Also included are fiddles, Celtic instruments, whistles, accordions, and more. In an exclusive promotion with MacJams.com, AMG will be sending the very first copy of ExpansionPack for GarageBand for free to one lucky MacJams.com visitor.