The unquenchable fire of inspiration consuming Max Cavalera has blessed the world with arguably the most prolific lifelong achievements in urgent, primal, gut-wrenching, and unapologetically transcendental extreme metal. To commune with the dark muse of heavy music’s shamanistic tribal leader is to envelop oneself inside some sort of post-modern sweat lodge. Brutal riffs, trippy esoteric summoning, unrelenting percussiveness, and diverse world music: whatever Max Cavalera hammers out on his four-string signature ESP, it always sets souls free.