Jessie J wrote her debut single 'Do It Like A Dude' as "a joke song".

The fast rising pop singer - who has previously penned hits for Miley Cyrus, Alicia Keyes, and Chris Borwn - said she wrote her first release in 15 minutes as a reaction to the songs she kept hearing on the TV at the time.

She said: "At the time I felt that the chart was very auto-tune heavy. There was a lot of guys with their trousers down by their knees and their neck chains so heavy they couldn't hold their head up.

"And I just went into the studio and they played a beat and I just started singing, 'Do it like a brother, do it like a dude'.

"And it was a joke, I was laughing. I said 'let's write a joke song'. And within 15 minutes it was done."

Jessie, 22, also said she kept Rihanna in mind when she wrote the track, and feels that it has "her swag".

She added: "Rihanna's 'Rude Boy' was out and I thought, 'It just has her swag all over it, let's write for her.' It was one of those songs that was supposed to be fun. I don't take myself seriously at all."

'Do It Like A Dude' is out now.