10 tracks you probably didn't know were written by Sia
She's written for some of the biggest artists.
Famous for massive hits such as 'Chandelier' and 'Cheap Thrills' Sia has also written a huge number of songs that you probably didn't know about.
Over the years Sia has written hits for Rihanna, Jessie J, Kelly Clarkson and Kylie Minogue to name just a few, here are some of the biggest hits she has written (or co-written).
Rihanna - 'Diamonds'
Ne-Yo - 'Let Me Love You'
Jessie J - 'Flashlight'
Rita Ora - 'Radioactive'
Celine Dion - 'Love Me Back to Life'
Kelly Clarkson - 'Invincible'
Pitbull ft Jennifer Lopez - 'We Are One'
Kylie Minogue - 'Sexercize'
David Guetta - 'Titanium ft. Sia' OK, so not a total surprise as she lent her voice to this smash hit.
Flo Rida - 'Wild Ones ft. Sia' She reportedly wrote this song in just 15 minutes.