No. 5 on the Billboard Hot 100 and was the tenth best-selling song of 2012 globally. In March 2012, Sia released a greatest hits album, Best Of..., in Australia. 2013–2014: Breakthrough with 1000 Forms of Fear In October 2013, Sia released "Elastic Heart" featuring The Weeknd and Diplo for the soundtrack of the American film The Hunger Games: Catching Fire (2013). Sia executive-produced Brooke Candy's debut EP, Opulence, released in May 2014, and co-wrote 3 songs on the EP. In July 2014, Sia released her own sixth studio album, 1000 Forms of Fear. She again collaborated with Greg Kurstin. The album debuted at No. 1 in the US Billboard 200 with first-week sales of 52,000 copies. By October 2015, it was certified gold by the RIAA denoting 500,000 equivalent-album units sold in the United States. The record peaked at No. 1 in Australia and reached the top ten of charts in numerous European regions. It was certified silver by the British Phonographic Industry and gold by the Australian Recording Industry Association. By early 2016, the album had sold 1 million copies worldwide. 1000 Forms of Fears lead single, "Chandelier" was released in March 2014. The song peaked at No. 8 on the US Billboard Hot 100, becoming Sia's first entry on that chart as a lead artist. Elsewhere, the song experienced similar commercial success, ranking in the top ten of the record charts in Australia and numerous European regions. As of January 2015, the single had sold 2 million copies in the United States. "Eye of the Needle" and "Big Girls Cry" were released as the second and third singles from the album, respectively, in June 2014. In January 2015, Sia released a solo version of "Elastic Heart" as the fourth single from 1000 Forms of Fear; it eventually reached the top 20 on the Hot 100. At the 57th Annual Grammy Awards (2015), Sia received four nominations for "Chandelier": Record of the Year, Song of the Year, Best Pop Solo Performance and Best Music Video. For performances of songs from 1000 Forms of Fear, Sia chose not to show her face, either facing away from audiences or hiding it behind oversized platinum blonde wigs. In videos for the singles "Chandelier", "Elastic Heart" and "Big Girls Cry", choreographed by Ryan Heffington and co-directed by Sia and Daniel Askill, and in many of the promotional live performances, child dancer Maddie Ziegler