"Radar" is a song recorded by American singer Britney Spears for her fifth studio album, Blackout (2007). It was written and produced by Bloodshy & Avant and The Clutch, with additional writing from Henrik Jonback, as a record that did not relate to any of her personal problems at the time. The recording sessions took place the day after Spears filed for divorce from Kevin Federline, and members of The Clutch claimed to be surprised by her work ethic. "Radar" was originally planned to be released as the third single from Blackout, but "Break the Ice" was chosen instead. The song was then planned as the fourth single, but the release was cancelled as Spears began recording her sixth studio album, Circus (2008). "Radar" was later included as a bonus track on Circus, and released as the fourth and final single from the album on June 22, 2009 by Jive Records.