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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Allison delivered on disco night, singing Donna Summer's "Hot Stuff." Randy praised her as being "one of the best singers in this competition." But Simon went even further, calling her slowed-down performance "brilliant."
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