Circus Songwriting Credits by Britney Spears

Circus is the sixth studio album by Britney Spears, released in December 2008 on Jive Records and produced by Dr. Luke, Max Martin, Danja, and others. It followed Spears's public mental health crisis and subsequent conservatorship in early 2008 and represented her commercial rehabilitation, debuting at number one on the Billboard 200 with 505,000 first-week sales in the United States. Spears co-wrote several tracks; the title track, '(If You Seek Amy),' and 'Womanizer' were the principal singles, with 'Womanizer' spending three weeks at number one on the Billboard Hot 100, her first number-one single in over a decade. The accompanying Circus Tour was one of the most commercially successful tours of 2009, grossing over $131 million globally. Circus has been certified triple platinum in the United States and is regarded as the most successful commercial comeback of any major pop artist of the decade, demonstrating that the conservatorship framework allowed Spears to re-engage with the music industry at her pre-crisis commercial level.