Def Leppard are an English rock band formed in Sheffield in 1976. Since 1992, the band has consisted of Rick Savage, Joe Elliott, Rick Allen, Phil Collen, and Vivian Campbell. They established themselves as part of the new wave of British heavy metal of the early 1980s. The band's first album, 1980's On Through the Night, reached the Top 15 in the UK but received little notice elsewhere. Their second album, 1981's High 'n' Dry, was produced by Mutt Lange, who helped them to define their melodic hard rock style. The album's most popular track, "Bringin' On the Heartbreak", became one of the first rock videos played on MTV in 1982. Their next studio album, Pyromania, the first with Collen featured on five tracks replacing guitarist Pete Willis who played rhythm guitar on the entire album before getting fired, was released in January 1983, with "Photograph" and "Rock of Ages" both topping the US Rock Tracks chart and reaching the top 20 of the Hot 100. Reaching No. 2 on the US album chart, Pyromania was certified Diamond in the US. The band's fourth album, the more pop-oriented Hysteria, topped the UK, US, Canadian and Australian charts and remained on the charts for over two years. From Wikipedia (https://en.wikipedia.org/wiki/Def_Lep...) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/b...)