Sia has revealed that she give a song to Bruno Mars.

The singer is a prolific songwriter and she has previously written for the likes of Beyoncé and Rihanna.

Speaking to Australia's Nova, the musician revealed that she is sitting on a tune that could work for an act like Bruno Mars.

When asked if she has ever penned a track about her husband Erik Anders Lang, Sia replied:

"It's not really my jam. Although I did write one right before we got together, which I like to say is about us.

"I'm trying to pitch that [track] to like, a Maroon 5 or a Bruno Mars. You'll hear it, it's called 'Step By Step'. It's a good one."

The Australian added that she wished she had written Taylor Swift's 'I Knew You Were Trouble'.

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Watch Sia's recent music videos below: