This isn't strictly a pop thing but it's quite interesting so shut up. Basically Muse and Elton John were going to duet for the Olympics, but then it all fell apart.
Matt Belamy talked about this to some radio station in LA (as quoted here), saying: "Believe it or not, Elton John gave us a call and wanted to write a song for the Olympics."
"At one time Elton John was actually the director of the music for the Olympics," he went on to explain, "He contacted us and we thought, 'This is far out! We're going to do a song for the Olympics with Elton John?!'"
FAR OUT MAN.
"So that's how the ball started rolling way back over a year ago. But then he pulled out of the Olympics. He didn't want to be involved anymore cause he fell out with the organisers so that left us with a half-baked idea. At that point we just let it go and carried on with making the album."
But all was not lost. Bellamy also revealed how "the Olympics approached us again about the ending ceremony for us to play and that's when we played them that song and they said they loved it and wanted to make it an official song of some kind".
And there we have it.