Muse have appeared on all three soundtracks to the Twilight films but Chris Wolstenholme from the band has likened it to "selling your soul".
The bassist told Newsbeat: "I'm not sure how cool it is to be on those kind of things but sometimes you've just got to get your music out there in different ways."
With the films breaking box office records Chris admits it has meant a big boost for the band Stateside: "It's very difficult in America because you don't have anything like Radio 1, nothing is national. "You have to take every opportunity you get over there and sometimes you have to sell your soul."
Twilight writer Stephenie Meyer is a big fan of the band and she has admitted that Muse inspired her writing.
Chris watched the first film which he "quite enjoyed" but admits it's not his "cup of tea" and hasn't watched any of the others.
He admits there was a bit of confusion over how their track Neutron Star Collision would appear in Eclipse.
He said: "When we were in the studio writing it, one minute they said they wanted to use it in the end credits, then they said they wanted to use it in another scene. "Then it was another scene and in the end we were like, 'Do what you want with it, we don't care any more'."
