Denver, Colorado extreme metal outfit formed in 1992, renowned for a chaotic blend of grindcore, death metal, and progressive elements that has made them one of the most technically adventurous acts in the American underground; their albums on Relapse Records, including Lucid Interval and Xenosapien, are landmarks of experimental extreme metal.

Philadelphia, Pennsylvania brutal death metal and grindcore band whose name — a medical term for conjoined twins — signals their penchant for grotesque themes delivered through abrasive, blasting extremity.

San Francisco, California three-piece brutal death metal and slam band formed in 2007, evolving from a noise project into a full-force practitioner of slam's rhythmically punishing style, with their 2011 album Orgasmica showcasing their established sound.

Providence, Rhode Island band operating at the intersection of death metal, grindcore, and metalcore, combining aggressive blasting extremity with metalcore's rhythmic drive.

Cesspool is an Atlanta, Georgia death metal band delivering the putrid, guttural brutality that defines the American underground death metal tradition. Their sound emphasizes raw, filthy aggression with thick, down-tuned riffing.

Louisville, Kentucky death-grind band Chains of Bondage combine brutal death metal heaviness with grindcore speed and intensity. Their material is short, violent, and unrelenting, aimed squarely at fans of the genre's most extreme corners.

Meridian, Mississippi brutal death metal and grindcore act Chains of Flesh deliver dense, gore-soaked heaviness drawing on slam and old-school brutal death conventions. Their sound is low-tuned and relentlessly violent, with grindcore tempos pushing the pace.

Tupelo, Mississippi brutal death metal and grindcore band Chainsaw Torture blend goregrind aesthetics with brutal death metal density in the tradition of Mississippi's extreme metal underground. Their sound is raw, fast, and gore-themed.

Dayton's Cheap Gas smashes black metal, crust punk, and grindcore into a filthy, high-speed collision that prioritizes ferocity and brevity above all else. Their sound is as blunt and unrefined as the industrial Midwestern city they come from.