Seemingly impervious to changes in musical fashion, Def Leppard continue to thrive. Their latest release, Songs From The Sparkle Lounge, is their perkiest effort in years, and even finds the pop-metallurgists teamed with country boy Tim McGraw on the track Nine Lives. Before hitting the road with Lep for yet another summer tour bonanza, Campbell sat down with MusicRadar to discuss his role in the band, working the blues into pop and how he's dealt with big-headed lead singers (no, we don't mean Joe Elliot). For more Def Leppard and the best music news, reviews and tuition, head to www.musicradar.com.