Cauchemar Chemin [ko sh(eu) mahr /ʃə.mɛ̃/] (French: 'nightmare path') is a composer of avant-garde classical and film music, specializing in dissonant, otherworldly harmonies and textures of mysterious and emotive psychological tension.

With a self-studied background in composition for orchestral and chamber ensembles, specifically focusing on 20th century concert techniques such as serialism and atonality, Cauchemar Chemin transitioned into electronic music production and engineering his own recordings in 2011 with the advent of the avant-garde/post-industrial group Embrace Our Nature, and has since produced 8 albums and 300+ songs in experimental electronic, concert, and commercial mediums.