Def Leppard are an English rock band formed in 1977 in Sheffield, England, UK, as part of the new wave of the British heavy metal movement. The members of the group's longest lasting line-up since 1992, have been Joe Elliott (lead vocals), Rick Savage (bass, backing vocals), Rick Allen (drums, backing vocals), Phil Collen (guitars, backing vocals), and Vivian Campbell (guitars, backing vocals). The band's greatest success came between the early 1980s and the early 1990s. Their 1981 album, High 'n' Dry, was produced by Robert John "Mutt" Lange, who helped them begin to define their style, the L.P's standout track "Bringin' On the Heartbreak" becoming one of the first rock videos played on MTV in 1982. The band's next studio album, Pyromania, was released in January 1983, with "Photograph" and "Rock of Ages" as the lead singles, the L.P. being certified diamond (10× platinum), in the U.S.. In 2003, the album was ranked # 384 on Rolling Stone's 500 Greatest Albums of All Time. Def Leppard's 4th L.P., Hysteria, released in 1987, topped the UK and U.S. album charts. As of 2009, it had exceeded the success of Pyromania, being certified 12× platinum for sales of over 12 million in the U.S., having gone on to sell over 25 million copies worldwide. The L.P. produced 7 hit singles, including the U.S. Billboard Hot 100 # 1 "Love Bites", "Pour Some Sugar on Me", "Hysteria", "Armageddon It", "Animal", "Rocket", and "Women". Their next studio album, Adrenalize, the first following the death of guitarist Steve Clark, topped the UK and U.S. charts in 1992, producing several hit singles, including "Let's Get Rocked" and "Have You Ever Needed Someone So Bad". The following year's, Retro Active, included the acoustic hit single "Two Steps Behind" then their greatest-hits album Vault, issued in 1995, featured the UK hit "When Love & Hate Collide". Def Leppard have sold more than 100 million records worldwide, being one of only 5 rock bands with 2 original studio L.Ps which have sold over 10 million copies in the U.S. The group were ranked No. 31 in VH1's "100 Greatest Artists of Hard Rock" and ranked No. 70 in the "100 Greatest Artists of All Time".