"Do Somethin'" is a song recorded by American singer Britney Spears for her first greatest hits album, Greatest Hits: My Prerogative (2004). It was written and produced by Christian Karlsson and Pontus Winnberg (known collectively as Bloodshy & Avant), with additional writing by Henrik Jonback and Angela Hunte. Originally, the song was never intended to be released as a single. Spears, however, wanted to shoot a music video for it, and had to convince her record company.