Chris Martin has vowed to give his latest song away to The Killers, if it's considered "s**t" by members of the public. The Coldplay frontman played BUCKET FOR A CROWN - a track he'd penned just hours before - at a surprise gig in London last night (28NOV06) to gauge a reaction to the new tune. And he vowed to give it away to the Las Vegas rockers if the crowd didn't warm to the new song. Martin made the remark to the audience, joking "If it's s**t we'll give it to The Killers and if it's good, we'll keep it." The TROUBLE hitmaker has already written songs for a galaxy of stars including Nelly Furtado, Embrace and JAY-Z.