5 Seconds of Summer have revealed that they have over thirty songs written for their debut album.

The Australian group have been writing tunes for their first full record and it seems they have been in prolific form.

Luke Hemmings told the Daily Star that they have collaborated with some UK acts, such as McFly, on material.

He said: "We lived here for six months when we first started writing our album. We wrote with loads of UK people like Roy Stride from Scouting For Girls and a track called 'Take It Away' with the boys from McFly.

Calum Hood meanwhile added: "Because nothing's been release yet we're not sure what is going to make the album. It's crazy, we've got at least 30 songs we all really love and I like them too much to give them away to anybody else. Some will be B-sides but we all have personal favourites so it's going to be a struggle."

Watch 5 Seconds of Summer's latest video below: