Last month, British rock legends Def Leppard appeared on Rockline Radio to promote their 10th studio album Songs From the Sparkle Lounge, slated for release under Universal Music Group's Mercury Records label on April 29. During the Q&A portion of the show, guitarist Phil Collen said that the band's hit singles "Photograph," "Animal," and "Rock of Ages" will appear in Activision's upcoming Guitar Hero IV.
8