Pop star Britney Spears has made a huge comeback with her past two albums. To keep up withfan demand Britney tweeted a teaser of her upcoming single I Wanna Go on Tuesday. The 20-second clip sounds promising! This single, off Femme Fatale will probably be as big a smash as 'Til The World Ends.

Listen HERE and look at photos of some of Britney's most recent performances below.