Mark Deutrom is an American musician and producer based in the United States, best known as the bassist for the Melvins from 1993 through 1998, appearing on Stoner Witch (1994), Stag (1996), and Honky (1997), having also produced the band's early records Gluey Porch Treatments and Ozma. After departing the Melvins, he pursued an idiosyncratic solo career spanning experimental rock, heavy music, and abstract composition, releasing albums including The Silent Treatment (2000), The Value of Decay (2011), and The Blue Bird (2019) via Season of Mist. His solo output resists easy categorization, reflecting an experimental sensibility that extends well beyond his metal associations.

Los Angeles' Masi blend neoclassical shred sensibility with heavy metal's bombast, led by guitarwork that prioritizes technical precision and melodic grandeur. An LA institution in the tradition of the city's technically oriented metal lineage.

Saint Paul's Matrekis delivers straightforward heavy metal with a blue-collar Minnesota sensibility — nothing flashy, just riffs built to last. Active since 2013, they keep the traditional metal flame burning in the Twin Cities underground.

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East Hartford's Matt Danger blends progressive metal ambition with metalcore intensity, threading intricate arrangements through aggressive heaviness. Since 2012, the Connecticut act has pushed that tension in directions most bands in either genre wouldn't dare.

New York's Maxxx have been delivering heavy metal laced with hard rock swagger since 2006, leaning into hooks and attitude in equal measure. Their sound is built for rooms, not headphones — loud, direct, and unapologetically fun.

Portland's Mayhem launched the same year as their Louisville namesake — 1987 — and has spent nearly four decades channeling heavy and thrash metal through the Pacific Northwest's dense, damp energy. They're a genuine relic of the pre-internet regional underground.

Denver's Mead Thief blend heavy doom with the muscle of classic heavy metal, evoking mile-high altitude and long, barren stretches of highway in equal measure. Since forming in 2020, the band has leaned into slow, crushing riffs anchored by a traditional songwriting sensibility that keeps the hooks in reach.