Elastic Heart

Elastic Heart is originally in the key of A major. It was first released on October 1, 2013, as part of the soundtrack for the film The Hunger Games Catching Fire, performed by Sia featuring The Weeknd and produced by Diplo and Greg Kurstin. The song was written by Sia Furler, Thomas Wesley Pentz, Andrew Swanson, and Abel Tesfaye. In 2014, Sia recorded a solo version for her album 1000 Forms of Fear, released as a single in January 2015. The music video for the solo version features Maddie Ziegler and Shia LaBeouf dancing inside a large cage, and it received widespread attention. The melody follows a chord progression of D A E F sharp minor, with a tempo around 130 beats per minute, mixing electropop and trap influences with a steady rhythm and strong vocal line.