An inexplicable new craze is sweeping adland - playing the ukelele.

Ed Morris (ECD at Lowe) plays.

Mark Reddy (BBH Head of Art) plays.

Even our own Russell Davies plays.

Weirder still, not only do these people play the tiny backwoods instrument, they also collect ukeleles. Mostly buying them on eBay.

If anyone can explain this phenomenon, please do.