Editing Def Leppard (section)

=== Lineup changes and ''Pyromania'' (1982–1983) ===
{{See also|Phil Collen|Pyromania (album)}}[[File:Def Leppard - Newport Centre 150203 (10) (6864644373).jpg|thumb|upright|Guitarist [[Phil Collen]] (pictured in 2003) joined the band in 1982.|alt=Collen playing guitar]]On 11 July 1982, Pete Willis was fired due to excessive alcohol consumption on the job and was replaced by [[Phil Collen]] of [[Girl (band)|Girl]] the next day. This personnel change took place during the recording of their third album, ''[[Pyromania (album)|Pyromania]]'', which was released on 20 January 1983 and also produced by Lange. The cover artwork depicted a cartoon image of a huge flame emerging from the top floor of a skyscraper, with a [[bullseye (target)|bullseye]] aimed at the flame. The lead single, "[[Photograph (Def Leppard song)|Photograph]]", turned Def Leppard into a household name, supplanting [[Michael Jackson]]'s "[[Beat It]]" as the most requested video on [[MTV]] and becoming a staple of rock radio (holding the number 1 position on the US Album Rock Track Chart for six weeks), and sparked a headline tour across the US.<ref>Bob Batchelor, Scott Stoddart ''The 1980s'' Greenwood Publishing Group, 2007</ref> The second single, '[[Rock of Ages (Def Leppard song)|Rock of Ages]], also reached number 1 on the Rock Tracks chart, with both singles reaching the Top 20 of the Hot 100 ("Photograph" number 12 and "Rock of Ages" number 16), unusual for hard rock songs.

Fuelled by "Photograph", "Rock of Ages", and the third single "[[Foolin']]", ''Pyromania'' went on to sell six million copies in 1983 (more than 100,000 copies every week in that year) and was held from the top of the US charts only by Michael Jackson's ''[[Thriller (Michael Jackson album)|Thriller]]''.<ref>{{cite news|first=Mick |last=Wall |year=2010 |title= Appetite for Destruction: The Mick Wall Interviews |publisher= Hachette UK}}</ref> With the album's massive success, ''Pyromania'' was the catalyst for the 1980s pop-metal movement.<ref name="Pyromania">[http://www.allmusic.com/album/pyromania-r5349 Pyromania: Def Leppard] Allmusic. Retrieved 17 November 2011</ref> In 2004, ''Pyromania'' was [[RIAA certification|certified Diamond]] having sold over 10 million copies in the US;<ref>[https://www.riaa.com/goldandplatinumdata.php?table=tblDiamond Diamond Awards] {{webarchive |url=https://web.archive.org/web/20130725044833/http://www.riaa.com/goldandplatinumdata.php?table=tblDiamond |date=25 July 2013}} ''[[RIAA]]'' Retrieved 28 January 2011</ref> it was also certified 7× platinum in Canada, where it had peaked at number 4, its second highest certification. With their music videos becoming a staple of MTV ''[[Rolling Stone]]'' named them among the artists of the [[Second British Invasion]].<ref>{{cite magazine |title=Anglomania: The Second British Invasion |url=https://www.rollingstone.com/music/music-news/anglomania-the-second-british-invasion-52016/ |access-date=29 April 2019 |magazine=Rolling Stone}}</ref> The ''Pyromania'' tour began in England at the [[Marquee Club]] on Wardour Street, [[Soho|Soho, London]] in February 1983. Def Leppard's US tour in support of the album began in March opening for [[Billy Squier]] and ended with a headlining performance before an audience of 55,000 at [[Jack Murphy Stadium]] in San Diego, California in September.<ref name="Leppard concerts"/> As a testament to the band's popularity at the time, a US Gallup poll in 1984 saw Def Leppard voted as favourite rock band over [[the Rolling Stones]], AC/DC, and [[Journey (band)|Journey]].<ref>[https://www.upi.com/Archives/1985/01/04/Rock-drummer-loses-arm/2945473662800/ "Rock drummer loses arm"]. UPI.com. Retrieved 13 December 2018</ref> ''Pyromania'' was not as successful in their native UK where it reached number 18 on the album chart.