High Quality Content by WIKIPEDIA articles! "Want U Back" is a song by British singer Cher Lloyd, taken from her debut studio album Sticks + Stones. It was released on 19 February 2012 as the third single and on 22 May 2012 as her debut U.S. single taken from the album. The UK single version of the song features guest vocals from The X Factor USA contestant Astro, while the original album version without Astro was released in the United States. It was written by Shellback and Savan Kotecha and it was produced by Shellback. Musically, "Want U Back" is a dance-pop song, with elements of bubblegum and synthpop while the lyrics are about a girl who gets jealous (though she denies it) when she sees her ex-boyfriend has moved on to another girl.