In the U.S., Pyromania was certified Diamond (10× Platinum). Def Leppard's fourth album Hysteria, released in August 1987, topped the UK and U.S. album charts. Since 1992, the band has consisted of Joe Elliott (lead vocals), Rick Savage (bassist, backing vocals), Rick Allen (drums, backing vocals), Phil Collen (guitar, backing vocals), and Vivian Campbell (guitar, backing vocals).
