In August 2021, Schweighöfer took to Twitter to announce that Hans Zimmer would score music for the film.

[3] The duo produced a blend of classical and modern soundscapes consisting drums, synths and orchestral music.

[3] Calling it as "a thoroughly enjoyable album", James Southall of Movie Wave assigned three-and-a-half of five stars, saying "The more heavy-duty, serious action material towards the end of the score [...] doesn’t do as much for me, but otherwise – while clearly this is not a major work – it’s all pulled together very well".

"[5] David Rooney of The Hollywood Reporter described it as "a jaunty score by Hans Zimmer and Steve Mazzaro that turns suspenseful in appropriate moments",[6] Benjamin Lee of The Guardian and Noel Murray of Los Angeles Times called it as "grand" and "powerhouse".

[7][8] Mimi Anthikkad Chibber of The Hindu wrote "The music of Army of Thieves reflects its Snyder pedigree [...] Hans Zimmer has created a peppy opera-infused score that has Wagner trending — Inspector Morse will surely be pleased.