12": Britney Spears: Till the World Ends (2011)

Six weeks since the release of her dubstep-infused comeback smash 'Hold It Against Me'. Two weeks since the premiere of possibly the most hyped and widely anticipated music video of recent times. Are we all ready for Britney's next move? Coming a lot sooner than everyone expected, 'Till The World Ends' is the lead single for Spears's seventh studio album Femme Fatale, due at the end of March. Leaving the dubstep (or as fans have affectionately named it, brit-step) behind, this single is pure electro-pop! The opening beat is punchy; imagine a Guetta anthem slowed down a notch. Britney quite literally purrs her way through the verses, no one but no one does sexy quite like her. 'I notice that you want it, you notice that I got it, you know I'm gonna take it, to the next level baby'. It's electro Britney by numbers in a way, until we get to the chorus.... 'WOAH OH-OH-OH-OH- AHHHH' - doesn't look too great on paper, but add a few vocal layers, a splash of autotune, and a thumping bass line, and we have a genuine club anthem. Listen to it once, just once, and try not humming it instantly. It's Britney's greatest yet most reviled asset which clinches the deal - her voice. By the end of the song we're in full on hands-in-the-air mode, 'dancing 'till the world ends'. What starts off a sexy, seductive ditty ends up being a pretty full on slice of power-pop. All in all a top quality tune, and as is tradition with Miss Spears, a cracking second single.