Britney Spears: extra track named

The extra track on the Japanese edition of 'Femme Fatale' has been announced.

The track is called 'Scary'.

As previously reported Britney released her new Ke$ha penned single 'Till The World Ends'.

It's available to download from iTunes now.

Katy Perry Lie Detector Asset

WATCH: Katy Perry Surprises A Superfan With A Lie Detector And Proved The Truth Really Does Hurt

Leigh-Anne Pinnock joins Snapchat

80+ Of The Best Popstars You Should Have On Snapchat

My Capital App

Want To Control The Music On Capital? Now You Can With Our New App - My Capital!