As Lionsgate's "The Hunger Games: Catching Fire" prepares to invade theaters worldwide on Nov. 22, Republic Records has set up its original film soundtrack with a trio of contrasting singles. Coldplay's piano-driven "Atlas," Christina Aguilera's midtempo ballad "We Remain" and Sia's rhythmic "Elastic Heart" (featuring the Weeknd and Diplo) have all been released as previews of the fall's most high-profile soundtrack, due Nov. 19.

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