Sia unleashed a snippet from her upcoming single, 'Reaper', which has been produced by Kanye West. The snippet is a mere 11 seconds long but the full 'Reaper' track will be unveiled tomorrow (January 7).

Sia's new album, 'This Is Acting', is scheduled for release on January 29. The album is made up of songs which she has written for other artists such as Rihanna and Adele. 

Recently Sia has shared other new tracks including 'Bird Set Free', 'Alive' and 'One Million Bullets'

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Listen to the snippet below: