Sludge

is a heavy metal subgenre blending doom metal’s slow, crushing riffs with the aggression and rawness of hardcore punk. Known for its thick, murky sound, it features distorted guitars, harsh vocals, and a grimy, abrasive atmosphere. Lyrically, sludge often explores anger, despair, and social decay. Influential bands like Eyehategod, Crowbar, and Melvins have shaped its gritty, swamp-like aesthetic, creating a dirty, visceral sonic experience.