Agalloch was one of the most revered bands in American atmospheric metal, based in Portland, Oregon. Blending black metal, folk, doom, post-rock, and neofolk into something entirely their own, the band created a string of landmark albums including "The Mantle" and "Ashes Against the Grain" before disbanding in 2016. Their Bandcamp catalog preserves remasters and demos from a body of work that helped define the atmospheric metal genre.

Agartha is a black metal project from Nashville, Tennessee. With four releases between 2015 and 2019, the project explores experimental territory under the banner of black metal, drawing its name from the legendary subterranean civilization of occult mythology.

Milwaukee black metal project. The name evokes Agartha, the legendary underground kingdom, from Beer City.

Agarwaen is a black metal project named after the Sindarin word meaning 'bloodstained' from Tolkien's legendarium. Their 2019 debut "Dottore I" delivers eight tracks of Tolkien-inspired black metal.

Age of Nephilim is a symphonic black metal band from Spokane, Washington. Their 2015 full-length "Cataclysm in the Land of the Watchers" draws from biblical Nephilim mythology, layering orchestral arrangements over black metal across ten tracks.

Aghartha is a post-black metal band split between Evansville, Indiana and Louisville, Kentucky. With six releases between 2016 and 2023 — including the full-lengths "Oceanic Womb" and "Avian" — the band crafts atmospheric, nature-influenced post-black metal from the Ohio River Valley.

Rochester, New York black metal and grindcore hybrid. Western New York extremity spanning the spectrum from blast beats to tremolo picking.

Agnosis is a doom metal band from New York City. With two EPs — "Hecate" (2005) and "A Painful Pattern" (2012) — the band plays slow, deliberate doom metal that draws from occult and introspective themes.

Agon is an avant-garde black metal project that originated in Miami, Florida before relocating to Berlin. Their 2020 EP "Engraved Power" and 2024 single "KRONOS" suggest a project pushing black metal into experimental, boundary-defying territory across continents.