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![An image of Sia](https://cdn.statically.io/img/www.billboard.com/wp-content/themes/vip/pmc-billboard-2021/assets/public/lazyload-fallback.gif)
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Sia
Sia first gained international recognition as a songwriter, penning hits for artists like Rihanna and Beyonce. With the release of her chart-topping 2014 album 1000 Forms of Fear, featuring the smash singles "Chandelier" and "Elastic Heart," the elusive Australian became one of the decade's most intriguing pop stars.