def leppard

Cheap Trick.  Poison.  Def Leppard.  It's an odd billing to be sure.  Poison and Def Leppard seem reasonable enough, with careers that rode the hair metal explosion of the 80s to multi-platinum success, but Cheap Trick, an 80s power ballad aside, were churning out power pop gems (that continue to influence bands today) five to ten years earlier than their tour mates.  Oddly enough, the tour's oldest band chronologically is its youngest spiritually and that is part of the magic that still makes Cheap Trick matter.