Snyder's regular collaborator Tom Holkenborg scored the film's music; the 15-track album which contained cues from Holkenborg and the original song "Longhouse Dinner" performed by Allison Crowe was released on December 15, 2023, with the track "A Call to Courage" released as a single on November 24, 2023.

With the film being split into two-parts, the second being Part Two: The Scargiver (2024), Holkenborg would also contribute music to the forthcoming instalment as well.

Describing it as an "advanced score with futuristic elements", Rebel Moon is also very grounded and earthy, as the film starts on an agricultural planet.

Holkenborg used simple instruments underscoring the characters' principles, morals and humanity and used vocals to give their own signature and capture their individual journeys.

[5] Jeremy Mathai of /Film called the score as "propulsive, moody, and stirring" that is "impossible to recreate from one's laptop or living room TV".