Do I dare put my four-penneth in?
Course I do!
As soon as Darius came on, I thought "he's miming". But the instruments were DEFINITELY being played and they were plugged into the amps. So I thought, "strange, why would he be playing his guitar live but not singing live". But he did look to be opening his mouth too wide in parts so I got very confused!
A little while later on one of the music channels the hunk in question came on singing that very same song! It sounded completely different, and there's Darius doing the very same little mouth gestures (or whatever you want to call them).
So I have finally come to the conclusion that Darius DID sing but he needs to articulate a little bit more and not wobble his mouth while he's singing!