The soundtrack featured 79 tracks from the score composed by Sonya Belousova and Giona Ostinelli, consisted of a four-hour long runtime underscoring the eight-episode series.

Composition began in late-November and December 2021, where they shot a three-and-half minute video analyzing the pitch and the outline of the concept and the basic sketches of the series' music, where each character had their own distinct instrumentation.

[2][3] Belousova and Ostinelli recorded the score with 110 musicians at the Abbey Road Studios which included 23 orchestral sessions held for 82 hours and over 3,667 takes.

[10] Collider's Arezou Amin stated that show's music "strikes a kind of nostalgic, adventuring tone" with the nostalgia due to "how jaunty it is".

[13] Matt Owen, for Guitar World, opined that Mihawk's theme was a "quintessential" performance by Marcin Patrzalek as it is "smothered with the classical and flamenco motifs that nod to his early roots, all while upping the ante with behind-the-nut strums, off-the-cuff tuning peg divebombs and (of course) a healthy dose of body knocks for additional percussive flair".