Somme are a Rochester, New York death metal band formed in 2020, their name invoking the catastrophic World War I battle as a thematic lens for brutal and unrelenting extreme metal.

Somnol are a Brooklyn-based death metal band formed in 2014, contributing to New York City's enduring tradition of extreme metal with a sound rooted in the direct and aggressive fundamentals of the genre.

Somnuri are a Brooklyn, New York sludge metal trio formed in 2017, channeling the heavy, abrasive energy of sludge metal through a dense and riff-forward approach that has earned them recognition in New York's heavy underground.

Son of Mourning is a melodic death metal band from Albany, New York, formed in 2007, crafting heavy, harmony-driven compositions in the tradition of Scandinavian-influenced American death metal.

Sons of Ghidorah is a stoner/doom metal band from New York, formed in 2014, taking their name from the classic kaiju and delivering titanic, slow-motion riff destruction in kind.

SOT is a New York sludge, doom, and hardcore hybrid band formed in 2011, fusing the oppressive heaviness of sludge and doom metal with the confrontational energy of hardcore punk.

Soul Release is a Buffalo, New York act that fuses neoclassical and thrash metal, incorporating shred-oriented guitar work into an aggressive thrash framework. Formed in 2012, they draw on the technical tradition of guitar-driven metal rooted in both classical composition and speed.

Soultrap is a New York thrash metal band formed in 2016. They work in the state's thrash tradition, delivering aggressive riffing and driving tempos in the lineage of East Coast speed and thrash.

Soured Ground is a Syracuse, New York band formed in 2016 that straddles thrash metal, crossover, and crust punk, embodying the raw, politically charged energy where the hardcore and metal underground intersect.