Def Leppard's Phil Collen joins Gleeso on Triple M Nights. With the upcoming release of Def Leppard's 12th album 'Diamond Star Halos', Phil gives us some insight on the record making process and the inspiration behind Def Leppard's sound. Gleeso praises Phil for being his fitness inspo, and we get some insight on why Phil Collen deciding to ditch the booze and turn into a fitness freak. 

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