Who Is Frankie Avalon And Why Was He On 'American Idol'?

Fifties crooner/actor made surprise performance on Wednesday's elimination show.By Gil Kaufman Frankie Avalon performs on "American Idol" on Wednesday Photo: Frank Micelotta/ Getty Images/ Fox "American Idol" loves surprises, whether it's finding new ways to torture the contestants as they await their fate, wacky themes — like next week's " 'Idol' at the Movies" show with Quentin Tarantino — or throwing new twists into the mix, like this year's one-time-only judges' save. But on ...

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