Credit: Courtesy iTunes

The buzz for the Fifty Shades of Grey movie just keeps heating up, and the latest song to be released from the soundtrack is only adding to the hype. Sia just premiered her single "Salted Wound" from the upcoming film, and the ethereal ballad features powerful vocals by the songstress along with hauntingly beautiful melodies.

This is the latest in a series of songs that have been released from the Fifty Shades of Grey soundtrack. Just last week we got to watch not-yet-seen clips from the flick in Ellie Goulding’s music video for "Love Me Like You Do," and only days earlier saw Dakota Johnson (aka Anastasia Steele) get tied up in The Weeknd’s “Earned It” music video. Plus, back in November Beyoncé released the unforgettably racy video for her song "Haunted" that is featured in the film.

Listen to Sia's song "Salted Wound" below, and catch Fifty Shades of Grey when it hits theaters everywhere Feb. 13.