Casino Del Sol's AVA Amphitheater has announced two additions to its already impressive summer lineup. First up, Joe Cocker and Huey Lewis & the News on July 15th. However, the big one is a collision of pop-metal giants as England's Def Leppard and Pittsburgh's Poison dual-headline a show on September 12th. I watched two seasons of Rock of Love, so I could live without being reminded of Bret Michaels' existence or his fondness for cowboy hats and bandannas, but if you only focus on the back-to-back hookfests of 1983's Pyromania and 1987's Hysteria, Def Leppard are actually a pretty good band. This might be the least-cool admission of all time, but I could listen to "Photograph" on a loop, possibly forever. What have you done to this rock and roll clown? I'm still not sure I know.