Few people would think that Britney Spears would mount a successful comeback in 2011, but in Femme Fatale she’s produced an album that defies those expectations. “Till the World Ends” is easily one of the best pop singles of the year, and now the campaign to promote that full-length record continues with the release of “I Wanna Go” as the next single. Max Martin was involved in the writing and production here and it’s not hard to detect his hand—it’s certainly hard to resist that whistling motif when it kicks in. The video is an odd affair, full of press conferences, Britney flashing a cop, paparazzi intrusion, and a whole lot more. Check it out above.