Souls Denied is a death metal band from Grand Rapids, Michigan, formed in 2015. They contribute to Michigan's steadily growing extreme metal scene with a no-frills death metal approach.

Souls of Dissolution is a black/death metal band from Riverside, California, formed in 2013. They operate in the blackened death territory, combining the tremolo-driven darkness of black metal with death metal's brutal low-end aggression in the Inland Empire underground.

Sound of Serenity is a Chicago, Illinois band formed in 2009 that combines metalcore's structural intensity with death metal's brutal sonic palette, operating in the space between melody-driven breakdowns and more extreme territory.

Sounds from Hell is a death/thrash metal band from West Haven, Connecticut, formed in 2021, delivering punishing riffs and aggressive tempos in the crossover tradition between old-school death metal and thrash.

Sounds of Chaos Below is a Topeka, Kansas band formed in 2022 that combines blackened death metal ferocity with brutal death metal density, carving out a particularly savage corner of the extreme metal underground in the American heartland.

Sour Milk Theorem is a death/doom metal band from Hollywood, Maryland, formed in 2008, blending the funereal weight of doom metal with death metal's guttural heaviness for a sound steeped in slow-motion dread.

Sources is a deathcore band from Sarasota, Florida, formed in 2014, combining the downtuned breakdowns and rhythmic brutality of deathcore with death metal extremity within the fertile Florida extreme metal ecosystem.

Soured is a death metal band from Asheville, North Carolina, formed in 2021, contributing to the region's growing extreme metal scene with a sound rooted in straightforward, unembellished death metal aggression.

Sourground is a Long Island, New York outfit formed in 2015 that merges groove metal's locking, mid-paced rhythmic attack with death metal's heavier tonal palette, drawing on the dense, riff-centric New York metal tradition.