"Sing" is My Chemical Romance's fourth track and second single from their fourth and final studio album, Danger Days: The True Lives of the Fabulous Killjoys. The official single artwork was posted on the band's website on October 2010. "Sing" marks the first time a song of the band has reached adult contemporary stations; it began airplay through Chicago radio station WCFS-FM by March 2011. The song was the second-best selling rock song of 2011 in the UK, ahead of Paramore's "Monster" and behind Foo Fighters' "Rope".