Philosopher and composer, Sacha writes music for theater and film. He has worked in many European theatres, including the Comédie-Française, Colline, Théâtre Vidy-Lausanne, Theatre of the Nations (Moscow). He created the company Fingerprint with director Galin Stoev in 2003. He recently wrote the music for Galin Stoev's film "The Infinite Garden" (Agitrop production, 2017) and "Ce qui demeure", a short film by Anne-Lise Morin. He is also a translator of theatrical and philosophical texts.