Philip Kenneth Collen is an English musician. He is the lead guitarist for the rock band Def Leppard, joining the band in 1982 during the recording of the Pyromania album. Before Collen’s entrance into Def Leppard on 12 July 1982 during the recording of Pyromania, he had previously been asked to consider joining the band during the 1981 tour for High ‘n’ Dry by Joe Elliott and Steve Clark, whom he knew at the time. Despite this invitation, there was no need to replace Pete Willis yet and as a result, Collen stayed as a member of Girl for the time being. Def Leppard has sold over 100 million records worldwide and two prestigious Diamond Awards to their credit.