Relive the teen's performances of Michael Jackson, No Doubt, Janis Joplin and more
Updated: Thursday May 07, 2009 | 12:40 PM EDT
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Relive Allen's performances of Michael Jackson, Donna Summer, Kanye West and more
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Simon called Allison's progress "completely staggering" after her solo performance on rock night, but it was her duet of Foghat's "Slow Ride" that had the judges begging the pair to record. Said Randy: "A perfect blend and a perfect marriage."
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