Taylor Swift has admitted that being so open in her song lyrics takes her to ''a very vulnerable place".

The 24-year-old I Knew You Were Trouble singer has started recording songs for films and sees it as a different kind of ''thrill'' compared to the ''intense'' process of making an album.

Speaking to Billboard magazine, Swift said: ''I think it's a bit of a relief to take the focus off of my own life.

''It can get pretty intense writing [personal] details - that's a very vulnerable place to put yourself in.

''But there's a specific type of thrill you get from that recounting of your life.''

When asked about recording the song Sweeter Than Fiction for One Chance, the movie which is based on the life of Britain's Got Talent winner Paul Potts, Swift added: ''There's a different kind of thrill you get hoping you have accurately portrayed someone else's emotions that you're seeing so well done by these actors, James Corden and Mackenzie Crook.

''The actors did such a great job it was fairly easy to get inside their heads.''