In late 2011, he made his professional acting debut in the biopic 3D concert film "", the movie is accompanied with the release of his remix album "", which includes remix versions of songs from his previous albums, collaborations with other recording artists and a brand-new track is also included. The remix album includes the single "Never Say Never" a duet song with singer and actor Jaden Smith in which it serves as the theme song for the 2010 movie "The Karate Kid." That same year, he released his first Christmas-themed album and his second studio album, "Under the Mistletoe", it features the singles "Mistletoe", Fa La La" featuring hip hop vocal group Boyz II Men, "All I Want For Christmas Is You" featuring Mariah Carey, and "Santa Claus Is Coming to Town".