First Listen: Britney Spears's "Till The World Ends"

Britney Spears just launched the second single, "Till The World Ends," from her upcoming Femme Fatale album and it's nothing short of massive! The song was penned by Ke$ha and produced by Dr. Luke and this sucker has Win! Win! Win! written all over it. Start clearing out a space in your head for this chorus now, because whether you like it or not, it's going to be stuck in there for the foreseeable future.

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