Hard Rock 2006.10.24 Compact Disc Studio Bludgeon Riffola/Island/UMe Records Universal Music & Video Distribution Robert John "Mutt" Lange This album was Def Leppard's fourth album, the first to be released since 1983's "Pyromania". Originally released 8/3/1987 on Mercury/PolyGram Records 830-675-1/2/4 <disc number="1"> </disc> <disc number="2"> </disc>