'American Idol': Adam Lambert detours for Michigan music fest
Lambert headlined the Tuesday night showcase, arriving on stage in a top hat and performing "For Your Entertainment" tracks "Fever," "Strut" and "Voodoo." Fellow season 8 alum Allison Iraheta even kicked off the night as his opener, singing her cover of Pat Benatar's "Heartbreaker."
And the duo have some pretty eclectic company on the lineup. Other headliners include Alice Cooper, Sammy Hagar, Ludacris and Bret Michaels.
Here are a few fan videos from the show, and there are whole lot more at MJ's Big Blog:
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