Oakland/San Francisco sludge metal project with deep roots stretching back to 2003. Five releases including the lowercase-titled atone summer beats and beyond the clouds reveal a veteran act that has evolved from pure sludge into more atmospheric territory across two decades.

Chicago post-metal/sludge act crafting atmospheric heaviness from the Windy City, blending shoegaze textures with crushing sludge in the tradition of Neurosis and Isis.

Tallahassee, Florida sludge/thrash hybrid with two releases since 2011. Named after the DC Comics rage-powered villain, their split with Ex-Breathers and Five Inversions EP channel capital-city fury through heavy, angular music.

San Francisco/Oakland sludge metal outfit with four releases since 2013. From early demos to proper EPs, they've built a catalog of crushing, low-end-heavy music from the Bay Area's industrial corridors.

Memphis, Tennessee hardcore punk and sludge hybrid with three releases since 2017. Their split with experimental grindcore outfit Knoll demonstrates a willingness to operate at the extreme edge of heavy music from the Bluff City.

Wilmington, North Carolina's Baag traffics in the slow-moving punishment of doom and sludge metal, a project that has been carving out a heavy, feedback-drenched presence in the Southeast underground since 2018.

Philadelphia power-violence and grindcore trio who describe their music as Eternal Microbursts of Electric Power, releasing a string of EPs and split 7-inches including records with Nimbus Terrifix and Chainsaw to the Face alongside albums such as Primordial Paranoia and Psychic Rot.

Orlando progressive and sludge metal band active from around 2013, blending slow-burning sludge weight with progressive song structures in the fertile Florida extreme metal underground.

Oakland sludge metal and crust band active from around 2013, fusing the abrasive weight of sludge with the rawer urgency of crust punk.