Carly Rose Sonenclar just keeps on knocking 'em dead! The Les Miserables and Wonderland alum continued her X Factor journey when she was summoned to Britney Spears sprawling estate to perform for the pop star and guest judge Will.i.am. The young singer wowed the experienced Spears with a powerful ballad rendition of Karmin’s “Brokenhearted.” Spears was so impressed with the teen she joked the youngster has to be "possessed." With chops like that, Carly could win it all! Check out her performance below.