This morning, after much speculation, Sam Smith officially announced that he's recorded the theme song for Sam Mendes' forthcoming James Bond film Spectre. Shortly afterwards, Smith's longtime collaborators Disclosure tweeted to say they and Jimmy Napes had done "some additional production" on the track. It's called "Writing's on the Wall", and it'll be available from September 25.

Watch Sam Smith and Disclosure's "Omen" video:

Watch Disclosure's full performance at Pitchfork Music Festival Paris: