Readers' Poll: The 10 Best 'American Idol' Performances
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See which performance beat Carrie Underwood's "Alone" and Adam Lambert's "Mad World." Kevin Winter/Getty

This week, American Idol is saying good-bye after 15 years on the air. The show was filled with memorable performances and saw its contestants blow pop music away, creating superstars out of Kelly Clarkson, Carrie Underwood, Adam Lambert and Jennifer Hudson. We asked our readers to vote for their favorite performances from the show's history. Here are the results.