"Elastic Heart" is a song by Australian singer-songwriter Sia, featuring Shia LaBeouf and dancer Maddie Ziegler. It was released in 2013 as a single from the soundtrack of the film "The Hunger Games: Catching Fire."

"Elastic Heart" is an emotional and powerful song with elements of pop and electropop. The song's lyrics explore themes of vulnerability, resilience, and the struggle to maintain emotional strength in the face of challenging circumstances.

The song was written by Sia, along with Greg Kurstin and Diplo, who also produced it. Sia's unique and distinctive vocals, combined with the haunting melody, create a poignant and memorable track.

The music video for "Elastic Heart" features a captivating dance performance between Shia LaBeouf and young dancer Maddie Ziegler, who gained fame through her appearances in Sia's music videos. The video showcases an interpretive dance inside a large birdcage, depicting a raw and emotional battle between the two characters.

Upon its release, "Elastic Heart" received widespread critical acclaim for its emotional depth and Sia's powerful vocal delivery. The song also achieved commercial success, charting in various countries.

"Elastic Heart" further solidified Sia's reputation as a talented singer-songwriter and established Maddie Ziegler as a rising star in the dance and entertainment world. The song's success, along with Sia's other hit singles, contributed to her growing popularity as one of the most influential and acclaimed artists in the music industry.

Overall, "Elastic Heart" is a compelling and emotionally charged song that resonated with audiences, showcasing Sia's ability to create music that touches the heart and leaves a lasting impact. The song's powerful message and the captivating visual storytelling in the music video made it a memorable and thought-provoking addition to Sia's discography.