Usually a headline like this would be filed in our 'Rock Fail' category, but luckily (for everyone) the only vocals and music in the video come from Marilyn Manson. Check out this freaky video where Britney Spears goes all 'Eyes Wide Shut' to the tune of Manson's cover of 'Sweet Dreams.'

Britney Spears is no stranger to lip-syncing, except in this case she's miming and strip dancing to someone else's music instead of the stuff people write for her. A video that just made it's way to the interwebs features a bunch of half naked dancers in masquerade costumes and Spears grinding on each other while a remix of the Marilyn Manson cover of 'Sweet Dreams' plays -- talk about your unusual parings. Spin reports that the clip was used during the pop star's 'Circus' tour, but was just leaked to YouTube.

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