Activision today announced it has partnered with Def Leppard to launch a three-song track pack for Guitar Hero III: Legends of Rock, giving you the opportunity to sample the band's #1 new radio single, "Nine Lives", five days before their upcoming studio album Songs from the Sparkle Lounge releases on April, 29, 2008. The track pack also features live versions of "Photograph" and "Rock of Ages", two of Def Leppard's most beloved chart-toppers from their multi-platinum Pyromania album. The track pack will be available on Xbox LIVE Marketplace on April 24, 2008 and in the PLAYSTATION Store in early May.