Three Billboards Outside Ebbing, Missouri (soundtrack)

McDonagh provided the script to Burwell prior to the film's shooting.^[1] As Burwell found the scoring process to be complex because of the constantly changing interpersonal dynamics between the characters, Burwell asked McDonagh on what the film was really about, to which McDonagh said it was about a woman who is at war with the police.^[2] Though it did not help that initially, this decision took lead in a helpful direction as Mildred changed her outfit as she was on the warpath. Burwell then composed a war-march piece, using guitar, mandolin, and strings as a stomp-clamping rhythm, to describe Mildfred's violence and vengeance. But also needed other themes to sympathetically connect with Mildred as a character. McDonagh described it as Sergio Leone-type of score that provides the film a Western feel.^[3]

Hence the theme of "loss" was utilized to elicit sympathy for he situation and choices, following the rape and murder of her daughter. Burwell used a nylon string guitar, piano, clarient and other string instuments for an intimate sounding.^[4] Another main theme was the "death" which progresses "as the story and the relationships develop, the themes intertwine until, by the last couple of reels, they’re barely recognizable". Burwell considered the film to be "very funny and very violent, and death is one of the things that drives all the characters towards their violence and their funny activities".

But as the narrative that switches between Mildred, Dixon and sheriff Willoughby, Burwell considered to provide each character having a distinctive musical signature, an approach used by Ennio Morricone for his spaghetti western scores. But since the process became too arched, Burwell decided to focus on Midred and then focusing on Dixon, using "Loss" as a shared theme. Burwell added that, "Dixon’s been burned to a crisp, basically, while he’s reading a letter from his mentor [Willoughby], and the advice he gives him in this letter leads him off in a different direction. So the music begins to play sympathetically for him and he now begins to align musically with Mildred".^[5]

Varèse Sarabande released the film's soundtrack on November 10, 2017, coinciding the film's release.^[6][7]

Marcy Donelson of AllMusic wrote "It's not one of Burwell's more ambitious scores, but it's one of his most organic – in terms of sound, but even more so in its symbiosis with the film."^[8] James Southall of Movie Wave wrote "It’s short, though – half of the 44-minute album is taken up by songs, dotted throughout the score. Program them out and you get a really nice, very colourful and evocative little score which is completely, unmistakably Carter Burwell."^[9] Jonathan Broxton of Movie Wave wrote "Tonally, Three Billboards Outside Ebbing Missouri shares commonalities with scores like Storyville from 1992, This Boy’s Life from 1993, The Chamber from 1996, The Hi-Lo Country from 1998, the quieter parts of The Alamo, and maybe True Grit, and anyone who appreciated his work on those scores may find this one also to their liking. However, what I appreciate about it the most is the way Burwell has crafted a perfect musical portrait of the central dichotomy inherent in Mildred: crippling grief overcome with raw aggression, antagonism, and an innate desire for justice at any cost."^[10]

David Rooney of The Hollywood Reporter wrote "More than the visuals, the depth of the movie owes much to Carter Burwell’s flavorful, distinctly American score, with its roots and folk elements, and to superb song choices."^[11] Glenn Kenny of RogerEbert.com stated that "Carter Burwell’s Morricone-inflected score is a treat".^[12] Sandy Schaefer of Screen Rant wrote "Much like he did on In Bruges, composer Carter Burwell further enhances the mood of Three Billboards with his beautiful score, blending rural tunes with more classical and poetic leitmotifs."^[13] Steve Pond of TheWrap stated that "Carter Burwell’s score and by the judicious use of evocative songs" aided the film.^[14]

A complete score album was released by 20th Century Fox Film Corporation as a part of the "For Your Consideration" campaign to garner industry validation during the 2017–18 film awards season.^[15]

Credits adapted from liner notes:^[16]