Sia drops track featuring Kendrick Lamar

Sia has released a collaboration with Kendrick Lamar on new song The Greatest.

It's the singer's first new music since releasing her album This Is Acting earlier this year.

The powerful anthem that repeats the refrain '"Don't give up, I won't give up" features a rapping verse from Lamar.

The singer also released a video that doesn't include Lamar's verse but does feature young dancer Maddie Ziegler who has been in several of Sia's videos including Chandelier and Elastic Heart.

Sia is about to head out on the road for her North American tour.