Activision has announced that a new downloadable track pack for Guitar Hero III: Legends of Rock will be available on Xbox LIVE Marketplace and PLAYSTATION Store on May 8th. The Muse track pack features the rousing hits "Exo-Politics" and "Supermassive Black Hole" from the band's album Black Holes and Revelations, and "Stockholm Syndrome" from their multi-platinum record Absolution.