Allen took center stage to deliver a soulful rendition of the Dixie Chicks song "Not Ready to Make Nice." Her vocal performance was so compelling that all of the judges turned their chairs around, giving the singer their endorsement.
Allen's performance ended with the four judges in a bidding war to work with her on the series. Ultimately, Allen selected Maroon Five front-man Adam Levine to serve as her mentor.
Here's a look at Allen's performance on "The Voice," as well as highlights from her stage, film and concert appearances.
Allen's interview on "The Voice."
Allen performs "Not Ready to Make Nice" on "The Voice."
"Saving All My Love For You"/"I Will Always Love You"
"This Is a Man's World"
"How Shall I See You Through My Tears"