"Want U Back" is a song by British singer Cher Lloyd from her debut studio album, Sticks and Stones (2011). It was released as the third and final single from the album on 17 February 2012, and it was released as the lead single from the US version of the album on 22 May 2012. The UK single release features guest vocals from The X Factor USA contestant Astro, while US and Snoop Dogg versions were released. The song was written by Savan Kotecha and Shellback, with production being handled by the latter. Musically, "Want U Back" is a dance-pop song, with elements of bubblegum and synthpop, while lyrically the song is about a girl who's jealous of her ex-boyfriend's new relationship, and tries to sabotage the new relationship.