Perry got snippy with Kara DioGuardi, which was the only interesting thing about Tuesday’s show. By Gil Kaufman Katy Perry and Simon Cowell on “American Idol” Tuesday Photo: Fox Katy Perry and Avril Lavigne know exactly what it’s like to have a musical dream.
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Katy Perry, Avril Lavigne Sit In On Tame ‘American Idol’ L.A. Auditions
