For years, people have been clamouring that Coldplay's music isn't worth paying for. Now, at last, the band themselves are bowing to pressure. Their new single, tickets to two upcoming concerts - yes, they're giving it all away for free.Violet Hill, the first single from the group's new record, is available as a free download starting at 12.15pm today. If you're going to take advantage, do it quick: in another week, you'll have to pay for the thing to get it from iTunes.In a further act of headline-stealing magnanimity, Coldplay have also announced two free gigs. On June 16, they will fill London's Brixton Academy, while four nights later they repeat the gesture at Madison Square Garden in New York.Tickets for both gigs will be distributed through a contest on the band's website, with details to be announced.