Jesper Kyd composed the soundtrack for the first Assassin's Creed game.
Kyd's score combines atmospheric electronic textures, orchestral writing, and choral elements to support the game's medieval settings and stealth-focused mood. The music helped distinguish the original title from a conventional action soundtrack by emphasizing tension, mystery, and historical atmosphere.
The soundtrack is especially associated with the game's journeys through Jerusalem, Acre, and Damascus during the Third Crusade. Kyd later returned to the franchise for Assassin's Creed II, Brotherhood, and Revelations, creating a musical connection across the early Ezio-era games.
Other composers, including Lorne Balfe and Sarah Schachner, worked on later Assassin's Creed titles. They are plausible alternatives because the series has used many composers, but Jesper Kyd is the specific composer credited for the original game's soundtrack.