Listen to Sia's "Unstoppable" as Well as All Six Pre-Released Songs Off 'This Is Acti
 

If it feels like Sia has practically released every song ahead of her upcoming blockbuster 'This Is Acting,' you'd be half right. With Thursday's release of "Unstoppable" she's officially released six of the 12 tracks off the album. That's **t something to complain about if you're a fan, but it does leave very little to the imagination as we approach 'This Is Acting's' release on January 29 since you can already listen to half the album.

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