Brian Tyler created the main musical score for Assassin's Creed IV: Black Flag.
Tyler composed the orchestral score for the pirate-themed adventure, supporting naval battles, exploration, stealth, and the emotional story of Edward Kenway. The game also uses sea shanties performed by the crew, which are separate from Tyler's original score and help create its distinctive maritime atmosphere.
Jesper Kyd is strongly associated with earlier Assassin's Creed music, especially the original game and the Ezio era, while Lorne Balfe scored Assassin's Creed III. Sarah Schachner later became a major composer for the series, including Assassin's Creed Origins and Assassin's Creed Valhalla. These overlapping musical identities make the Black Flag credit easy to misremember.