With a dual French-American musical culture, Guillaume Roussel is a composer whose writing is influenced by both his European standards and the codes of American cinema. 

Trained in classical music, jazz, and orchestral conducting, he has established himself on both sides of the Atlantic. Alternating between blockbusters, arthouse films, series, and animation. He composed the scores for Expendables 4, Black Beauty for Disney+, as well as Bac Nord and The Three Musketeers, both of which earned him a César nomination for Best Original Music.

Guillaume Roussel began playing piano at the age of five and trained at the CNR in Saint-Maur in orchestration, harmonization, and orchestral conducting, before perfecting his jazz skills at the CIM and the Didier Lockwood School. In 2006, he conducted the London Philharmonic Orchestra at Abbey Road, a major early milestone that launched his international career. 

Guillaume settled in Los Angeles in 2010, where he joined the renowned Remote Control studios under Hans Zimmer’s mentorship. He then participated in major international productions such as Pirates of the Caribbean: On Stranger Tides and The Smurfs. His “French-style” writing was well received across the Atlantic, earning him special recognition from his American peers. 

Over the years, Roussel has developed enduring artistic partnerships with directors such as Cédric Jimenez (Bac Nord, Novembre,…), Martin Bourboulon (Carême, The Three Musketeers,…) and Jérôme Salle (Kompromat, Totems,…). Built on trust and a deep understanding of their cinematic worlds, these collaborations allow him to continually refine his musical approach and bring precision and coherence to his scores across genres. 

In 2023 and 2024, Guillaume Roussel composed the music for two major international productions: Expendables 4 and Lift (Netflix US), at the broadcaster’s direct invitation. In 2025, he continues his momentum with Martin Bourboulon’s 13 Days 13 Nights, presented in the Official Selection at the Cannes Film Festival, Carême, his first collaboration with Apple TV and is also embarking on a new artistic adventure alongside Cédric Jimenez: Chien 51.