SUMAC is an American experimental metal band formed in 2014, based in Seattle, Washington. The band consists of Aaron Turner (formerly of ISIS), Nick Yacyshyn (of Baptists), and Brian Cook (formerly of Russian Circles). Their sound is characterized by its dark, heavy, and complex soundscapes that blend metal, sludge, noise, and avant-garde elements. They have released four full-length albums, each one showcasing a unique evolution of their sound. SUMAC has received critical acclaim for their innovative and powerful approach to heavy music, and their live performances are known for their intensity and unpredictability.