Taylor Swift has released a new song, "Safe and Sound" from the upcoming film The Hunger Games, on iTunes overnight, announcing its arrival in a surprise series of announcements late Thursday night (Dec. 22) via Twitter. Swift co-wrote the song with Joy Williams and John Paul White of the Civil Wars (who also perform on the track) and award-winning singer, songwriter and producer T Bone Burnett. The song is the first single from the soundtrack of the film which opens in theaters on March 23. Directed by Gary Ross, the futuristic film centers around a boy and girl selected from 12 districts to fight to the death on live television. The cast includes Jennifer Lawrence, Josh Hutcherson, Liam Hemsworth, Woody Harrelson, Stanley Tucci and Donald Sutherland, among others. Burnett has supervised the soundtracks to several notable films, including O Brother, Where Art Thou, Walk the Line and Crazy Heart. Swift's recording of "Safe and Sound" quickly topped the iTunes sales chart on Friday.