The album set for a December 2nd release features the # 1 hit "Womanizer" as well as collaborations with Max Martin, Dr. Luke, Danja, Guy Sigsworth (Madonna, Alanis Morissette) and more.

Circus Track Listing: 1. Womanizer 2. Circus 3. Out From Under 4. Kill The Lights 5. Shattered Glass 6. If U Seek Amy 7. Unusual You 8. Blur 9. Mmm Papi 10. Mannequin 11. Lace and Leather 12. My Baby 13. Radar (Bonus Track) - Watch the Womanizer video here - you can turn the sounds off

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