Justin Timberlake Performs 'SexyBack' In A Barbershop Choir (VIDEO)

A barbershop choir featuring Jimmy Fallon, no less.

Yes, JT dropped in on 'Late Night With Jimmy Fallon' this week, and delighted the audience - and us - with a barbershop rendition of his 2006 hit, 'SexyBack'.

It's pretty darn magnificent - although we have to say, Justin: it's no 'Dick In A Box'...