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Disc1
| 1 | Circus (Tom Neville Ringleader mix) | Britney Spears | 7:52 |
| 2 | Circus (Junior Vasquez Club Circus) | Britney Spears | 9:03 |
| 3 | Circus (Junior Vasquez Electric Circus) | Britney Spears | 9:03 |
| 4 | Circus (Junior Vasquez Ringleader mix) | Britney Spears | 9:39 |
| 5 | Circus (Diplo Clown mix) | Britney Spears | 3:14 |
| 6 | Circus (Diplo Circus mix) | Britney Spears | 4:26 |
| 7 | Circus (original mix) | Britney Spears | 3:11 |