is this from the Britney Live From Miami?

Britney Spears -Toxic (Live  Onyx Hotel Tour)

The Circus: Starring Britney Spears tour FULL AUDIO

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Britney Spears -  The Femme Fatale Tour Live from Toronto (EPIX AUDIO)

Audio track from the live video of the Super Bowl XLVI Halftime Show of Madonna's amazing performance.

Britney Spears performance on VMA's 2000.

The Circus Starring: Britney Spears... Live Revamped by Me...