Legendary San Jose stoner/doom metal institution formed in 1992, Sleep defined a generation of slow, cannabis-scorched heaviness with records like Holy Mountain and the monolithic single-track Dopesmoker. Their hypnotic, Sabbath-descended dirges became the blueprint for an entire strain of heavy, riff-obsessed music that continues to resonate worldwide.

Lewisburg, Pennsylvania doom/death metal band formed in 2023, drawing on the oppressive weight of funeral doom and the guttural extremity of death metal in a rural setting far removed from major metropolitan scenes. Sleep Throne bring a bleak, isolated atmosphere that suits their heavy, mid-paced riffing.

San Francisco sludge/doom/post-metal trio formed in 2018, layering colossal low-end riffs beneath post-metal's expansive structural ambitions and sludge's punishing dissonance. Sleepbomb draw naturally from the Bay Area's rich tradition of heavy, slow, and deliberately oppressive music.

Indianapolis sludge/doom metal band active since 2010, building heavy, slow-burning compositions rooted in the Midwest's workmanlike approach to extreme music. Sleepbringer favor atmosphere and weight over flash, grinding through extended riff cycles with methodical intensity.

New York doom/stoner metal band formed in 2018, steeped in the heavy, psychedelic riff traditions that run from Black Sabbath through generations of slow and heavy music. Sleeping Village prioritize atmosphere and tonal depth, crafting music that moves at the pace of continents drifting.

Detroit's Sleepy Cheese brew a thick combination of stoner riffing, sludge-soaked heaviness, and slow-motion doom, leaning into the grimy industrial character of their Motor City home since 2014. Their sound prizes weight and atmosphere over speed, settling into a low, comfortable groove.

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Providence's Sliimo emerged in 2023 as a young entry into Rhode Island's heavy underground, working the slow, oppressive intersection of sludge, stoner, and doom metal. Their sound prioritizes crushing low-end and a crawling pace, fitting naturally into the New England scene's appetite for uglier, heavier sounds.

Milwaukee's Slob Donovan have spent over a decade dragging drone, sludge, and doom metal into the slowest possible territory since their 2009 formation, producing music defined by cavernous low frequencies and suffocating tempo. They sit comfortably in the Wisconsin underground's tolerance for the willfully ugly and punishing.