Chris Martin disguised himself as a skeleton to DJ at an Arcade Fire show.

Concert-goers were completely unaware the Coldplay frontman was in the fancy dress outfit spinning records at the band's show at London's Roundhouse earlier this month.

Speaking about the gig - in which fans were asked to attend in either formal wear or fancy dress - frontman Win Butler told BBC Radio 2, "[Chris] was out at the DJ booth with me the other night wearing a skull mask. It was pretty cool. He was the hype man, he's an amazing hype man." When quizzed as to whether the audience recognized Chris, the "After-Life" singer replied ,"I don't think so."

Win also hinted Arcade Fire will be appearing at UK festivals next summer, but remained tight lipped as to which events they would perform at, teasing "get your wellies ready" and saying he had recently bought his six-month-old son his first pair of wellington boots in preparation for the festival season.