Christina judges Aquile's "Grenade" against Sylvia's "Fighter."
Available Until 09/10/14

Appearing:

Carson Daly
Blake Shelton
Adam Levine
CeeLo Green
Christina Aguilera
Tags: The Voice, Season 3, highlight, Knockouts, Sylvia Yacoub, Aquile, Fighter, Grenade, Christina Aguilera

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