'American Idol' Tour Kicks Off; Set List Includes Gotye Hit By Phillip Phillips, Billy Joel Classic By Colton Dixon

Season 11's Top 10 also performed songs by "X Factor" finalists and judges and coaches from "The Voice." Plus: a whole lotta Adele.

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Bonnie Jill Laflin Bridget Moynahan Britney Spears Brittany Daniel Brittany Lee