No matter how the film turns out (please let it be Moulin Rouge, Part Deux!), the accompanying soundtrack for Baz Luhrmann‘s The Great Gatsby is already a solid smash, thanks to incredible contributions from the likes of Florence + The Machine, The XX, Nero and, of course, Lana Del Rey with “Young & Beautiful.”

The next moment of brilliance comes from Queen Sia herself who, while penning pop songs for quite literally every pop star in the modern world over the past 3 years, including Rihanna, Kylie, Legendtina and, most recently, Beyoncé, took the time to contribute a soaring power ballad to the hallowed soundtrack.

“Kill & Run” is a moody, intensely intimate ballad, co-penned by the fantastic Chris Braide (check out the MuuMuse interview from back in 2010.) “Follow the hands as they move/Try to make out your mood, but my brain doesn’t want to,” she croons. As with any Sia-penned ballad, her soulful voice always carries us through. But it’s that almighty crescendo, as the songstress begins yelping with all her might on top of a majestic orchestra, that truly lifts the song to shiver-inducing new heights.

Prepare for chill overload and goosebumps galore because, well, it’s Sia. Duh.

“Kill and run, a bullet through your heart…”