Taylor Swift has said that she has written 25 songs to choose from for her fourth album.

She told the Hollywood Reporter that she likes to spend two years writing for her albums:

"I've written 25 songs so far, so it's coming along really well. I've been writing a lot, and I like to take two years to make a record. We're at the end of year one and I still have a year left to go to write. It's looking really great".

Her last release was 2010's 'Speak Now', which had big hits like 'Mine' and 'Mean', and the 21-year-old says that she writes about painful experiences as a way to get over them:

"I write about everything that intensely affects me. The more intense, the more painful, the more of a shudder it is to think about, the more I know I need to write a song about it to get past it...It's been like this since I was a little kid, and I would go to school, and I would think to myself, 'Man, I'm really lonely, and I don't know who to talk to today, but it's OK because I can write a song about it later.' It's the same process..."

Check out Taylor Swift's video for 'Back To December' and an interview she did with The BBC One Show earlier this year: