This is Usher’s “Love in the Club” played by the mighty Rock-Afire Explosion.

The insane genius behind this has a number of other performances on YouTube but he’s really hit his stride with this one.  Wikipedia, as always, has more.

The Tories missed a trick back in 1991. With ecstasy use on the rise and alcohol consumption by young people dropping, they could have embraced the love drug and created a youth culture of docile, friendly ravers. Instead we got the Criminal Justice Act and alcopops for the Jilted Generation. Ah well, at least the music survived. Hardcore people never die and all that.