Pop-punk musician Avril Lavigne has already written eight songs for her next album. The "Smile" singer only released her fourth album, Goodbye Lullaby in March, but is keen to follow it up quickly, and has already been working on tracks.

"I already have 8 songs! I would like to release the 5th album really quick (sic). This record was more mellow, and the next one will be pop and more fun again. I already have a song that I know is going to be a single, I just need to re-record it (sic)!" she wrote on fan site Avril Lavigne Band Aids.

The 26-year-old also revealed she will be performing a cover of Coldplay's "Fix You" as part of her set when she tours this summer. Avril also caused controversy at the weekend when she appeared at the MuchMusic Video Awards in Toronto, Canada, as she swore during her performance of "What the Hell," which was broadcast live on TV.