Se il precedente Complètement marteau lo aveva ritratto nella paziente costruzione artigianale dell'opera solitaria, il nuovo Au diable vert riporta René Lussier ai più gioiosi vertici della creatività condivisa e collettiva (seppure da remoto, date le circostanze legate al Covid): "Le diable vert is a withdrawn place where Nature has kept or regained its rights; a place where you find yourself lost without really knowing when exactly you lost your bearings. I suppose this definition could also apply to my music. I would add a dimension of freedom: the joy of moving forward blindly and holding on until the end of the journey.”
Scrive Cutler, presente egli stesso in una delle tracce dell'album: "It’s pretty much of a masterpiece: impeccable sound, jaw-dropping compositions, amazing detail and world-class performers. Scored for electric guitars and basses, two drummers, marimba, accordion, tuba, euphonium, clarinet, trombone, singing saw, ondes martenot, various extra percussions and a variety of voices, these pieces offer infectious complexity, unexpected twists, Uncle Meat and Song Cycle moments, respect for the listener, low boredom thresholds and impeccable attention to fine detail. It’s a music you can listen to repeatedly, full of substance and in constant motion."