Phil Collen, guitarist for Def Leppard, is involved in multiple new musical projects, including a signature guitar model with Pro Series, a new single 'Thunder Love' with Crossbone Skully featuring producer Mutt Lange, and contributions to Brian Fallon's upcoming album. He has also commented on Def Leppard's live performances, the band's future album timeline, and clarified a past incident with Glenn Danzig. Collen attributes much of Def Leppard's 1980s success to producer Mutt Lange.