Def Leppard is an English band formed in 1977. The band's strongest commercial success came between the early 1980s and the early 1990s.

Def Leppard's fourth album Hysteria released in 1987, topped the album charts. As of 2009 it has 12x platinum sales in the United States, and has gone on to sell over 20 million copies worldwide.The album spawned six hit singles, including the #1 hit "Love Bites."