Isis is a monolithic, breathing, dense, incredibly spiritual musical experience that, while rooted in heavy metal and the punk/hardcore aesthetic, relies just as heavily on ambience, atmosphere, and tone as it does complexity, aggressiveness and raw emotion. Not so much a band per se as a collective, the artisans who comprise the Boston quintet paint vivid and surreal conceptual compositions layering feedback, power chords, and intense quiet/loud dynamics.