Pyromania is the third studio album by Def Leppard, originally released in 1983 The first album to feature guitarist Phil Collen who replaced founding member Pete Willis.
The classic rock band's fourth - and most popular - album., 4 was released in 1981 on Atlantic Records. Several singles from the album were hugely successful, including "Urgent", "Waiting for a Girl Like You" and "Juke Box Hero".