11-year-old dancer Maddie Ziegler (Dance Moms) performing Sia's latest song “Chandelier,” the bouncy lead single from her next album 1000 Forms of Fear. Apropos of the song’s theme of childlike abandon, Ziegler, sporting a blond wig that resembles Sia’s own hair, frolics around an apartment. And demonstrating just how communicative dance can be, she interprets Ryan Heffington’s mesmerizing choreography with impressive skill. Directed by Sia herself and Daniel Askill.