Music of Clair Obscur: Expedition 33

Lorien Testard (left) led composition of the game's music, joined by Alice Duport-Percier (right), who was also the primary vocalist.

The music of the 2025 role-playing video game Clair Obscur: Expedition 33, developed by Sandfall Interactive, comprises a soundtrack album and extended play composed principally by Lorien Testard. The first professional video game Testard wrote music for, the soundtrack of Expedition 33 was composed towards a wide variety of musical genres and styles, ranging from classical opera to heavy-metal rock, and made substantial usage of leitmotifs. Developed over the course of five years, Testard would be joined by vocal artist Alice Duport-Percier, who took on the role of co-composer; approximately thirty other musicians and a nine-person choir would later collaborate on the score.

The album, totaling 154 unique songs, comprises the soundtrack of Expedition 33's base game, released on 24 April 2025. It was met with unanimous praise from both audiences and critics for its distinctive atmosphere, emotional weight, and adaptability. Physical vinyl releases in collaboration with record label Laced Records were announced in July 2025 and are scheduled to ship in February 2026. An orchestral concert tour in collaboration with production company Bleu Citron Tournées debuted in October 2025, with a second leg planned for Spring 2026.

The extended play, released on 12 December 2025, consists of 6 additional tracks featured in the "Verso's Drafts" playable level added as part of the game's free 1.5.0 "'Thank You' Update", formally revealed after it was named Game of the Year at The Game Awards 2025.