"To give the soundtrack its unique tone, Blanchard integrated the jazzy sound of his band, The E-Collective, with that of a traditional 65-piece orchestra.

[5] The film opens with the battlefield scene from Gone with the Wind over Blanchard's orchestration of "Swanee River".

[5] The ending of the film, which shows footage from the Unite the Right rally of 2017, reused Blanchard's main theme from Inside Man, a deliberate choice by director Spike Lee over what Blanchard had already composed for the film's closing music.

[6] As Lee needed a song for the film's ending credits, he reached out to his friend Troy Carter, a Spotify executive and advisor of Prince's estate.

After Carter attended a private screening of BlacKkKlansman, he offered Lee Prince's unreleased cover of "Mary Don't You Weep", which had been recorded on cassette in the mid-80s.