Britney Spears fans looking for more dance sequences from the singer will find themselves pleased by her latest move: An alternate video for "'Till The World Ends." Titled "Dance 'Till The World Ends," the clip premiered online today (Apr. 15).

While the original "'Till The World Ends" video, which premiered online Apr. 6, focuses heavily on an apocalyptic theme, the new clip is much more choreography-focused -- and sees not only Spears' back-up dancers working it, but also the pop songstress herself.

The alternate version also features a completely new ending, in which Spears smiles into the camera instead of Spears and co. emerging from their underground party.