Britney Spears Single 'Till the World Ends' Leaks (Listen!) 1If Britney Spears’ latest single, “Till the World Ends,” sounds unmistakably like a Ke$ha song, that’s because the “Tik Tok” singer penned the track, produced by Dr. Luke and Max Martin. It leaked today.

It’s the second single to hit the Internet off Spears heavily danced-influenced new album Femme Fatale, which is slated for release Mar. 29.

Click photo to see cover art full size.

The track was actually expected to hit radio stations next week, but undoubtedly Spears’ camp ordered it released.

“That song is me imagining her and any female musician touring the world,” Ke$ha said recently in an interview with

“You know, when you go out, and you’re having an amazing, magical night and you don’t want to go to sleep and you want it to last until the world ends,” she said.

“Hold It Against Me,” another dance driven tune was released last month, followed by the video, which was chock full of product placements.