Editing Def Leppard (section)

==History==

===Formation and early years (1977–1979)===
Def Leppard was formed in Sheffield in late 1977 by schoolmates Pete Willis (guitar), Rick Savage (bass), and Tony Kenning (drums). Vocalist [[Joe Elliott]] joined shortly after, having responded to an advertisement. The group initially performed under the name '''Atomic Mass''' before Elliott suggested the name Def Leppard, inspired by a fictitious band he had sketched in a school notebook. Guitarist Steve Clark joined in 1978, giving the band its classic dual-guitar sound.

After recording a self-financed [[extended play|EP]], ''[[The Def Leppard E.P.]]'' (1979), the band attracted significant attention and signed with [[Phonogram Records]]. Drummer Frank Noon had briefly filled in after Kenning's departure before the permanent recruitment of [[Rick Allen (drummer)|Rick Allen]], who was just 15 years old at the time.

===''On Through the Night'' and ''High 'n' Dry'' (1980–1982)===
The band released their debut album, ''[[On Through the Night]]'', in 1980, which reached number 15 on the [[UK Albums Chart]] and number 51 on the [[Billboard 200]]. While it established them as part of the NWOBHM movement, the band was already looking towards a more commercially accessible sound.

Producer [[Robert John "Mutt" Lange]] was brought in for the second album, ''[[High 'n' Dry]]'' (1981), which marked a significant evolution in the band's polished studio approach. Around this time, guitarist Pete Willis was fired due to alcohol problems and was replaced by [[Vivian Campbell]]'s predecessor, [[Phil Collen]], formerly of the band Girl.

===''Pyromania'' and global breakthrough (1983)===
''[[Pyromania (album)|Pyromania]]'' (1983), again produced by Mutt Lange, was a landmark release. It reached number 2 on the ''Billboard 200'' and was certified 10× Platinum in the United States, driven by the singles "Photograph", "Rock of Ages", and "Foolin'". The album sold over 10 million copies worldwide and helped define the sound of 1980s hard rock. The accompanying music videos received heavy rotation on the newly launched [[MTV]], propelling the band to international stardom.

===Tragedy and triumph: ''Hysteria'' (1984–1988)===
The recording of ''[[Hysteria (Def Leppard album)|Hysteria]]'' was marked by personal tragedy. On New Year's Eve 1984, drummer [[Rick Allen (drummer)|Rick Allen]] was involved in a serious car accident near Sheffield in which he lost his left arm. Rather than replace him, the band rallied around Allen, who adapted his playing technique using a custom electronic drum kit that allowed him to play kick drum parts with his feet that his left hand had previously covered.

After nearly three years in production, ''Hysteria'' was released in August 1987. It became one of the best-selling albums of all time, with over 25 million copies sold worldwide. Seven of its twelve tracks were released as singles — a record at the time — including "Pour Some Sugar on Me", "Love Bites", and "Animal". "Love Bites" reached number 1 on the ''[[Billboard Hot 100]]''.

===Loss of Steve Clark and ''Adrenalize'' (1989–1993)===
Tragedy struck again on 8 January 1991 when guitarist [[Steve Clark]] was found dead at his London home due to an accidental overdose of alcohol and prescription drugs. He was 30 years old. The remaining members chose to continue and completed their next album as a four-piece.

''[[Adrenalize]]'' was released in March 1992 and debuted at number 1 in both the United Kingdom and the United States. The single "Let's Get Rocked" became a worldwide hit. [[Vivian Campbell]], formerly of [[Whitesnake]] and [[Dio (band)|Dio]], joined as Steve Clark's permanent replacement.

===Later albums and continued success (1994–present)===
The band continued recording and touring through the following decades:

* ''[[Slang (album)|Slang]]'' (1996) — a departure into a harder, more alternative-influenced sound
* ''[[Euphoria (Def Leppard album)|Euphoria]]'' (1999) — a return to their classic sound, reaching number 11 in the US
* ''[[X (Def Leppard album)|X]]'' (2002)
* ''[[Yeah! (Def Leppard album)|Yeah!]]'' (2006) — a covers album
* ''[[Songs from the Sparkle Lounge]]'' (2008)
* ''[[Def Leppard (album)|Def Leppard]]'' (2015) — their first self-titled album, debuting at number 10 on the ''Billboard 200''
* ''[[Diamond Star Halos]]'' (2022) — their first studio album in seven years, receiving strong critical praise

In 2019, Def Leppard was inducted into the [[Rock and Roll Hall of Fame]]. That same year, the band finally made their catalogue available on [[streaming music|streaming platforms]] after years of holding out, and the move was immediately successful, with "Pour Some Sugar on Me" reaching the top 10 on several streaming charts.