Ansuz channels experimental black metal from Leipzig since 2022, named after the Norse rune associated with Odin and divine communication. From Saxony's cultural capital, they push black metal into unconventional sonic territory.

Apparatus is an experimental blackened death metal band from Copenhagen, Denmark, formed in 2014, whose extensive catalog includes the Cthulhu trilogy, Demonomicon, Yonder Yawns the Universe, and HM-2. The band draws heavily on Lovecraftian cosmic horror themes, building a thematic universe around the eldritch mythology across their releases.

Armia has evolved through multiple radical phases — from hardcore punk through alternative and avant-garde metal to experimental post-hardcore — from Poznań since 2015. Their Polish name meaning 'army' belies a creative restlessness that has made them one of the most stylistically adventurous acts in the Polish underground.

Athens' As High as Honor craft experimental raw black metal that pushes against conventional boundaries while maintaining the genre's primitive intensity. Since 2017, they've explored the tension between lo-fi rawness and avant-garde experimentation.

Astharioth channels experimental black metal from Tiel in Gelderland since 2014. Their demonic name — a variant of Astaroth — drives unconventional compositions that push black metal's boundaries from this Betuwe river town.

Atys creates experimental and industrial black metal from Deva in Hunedoara County since 2016. From this Transylvanian city beneath the ruins of a medieval fortress, they push black metal into unconventional industrial territory.

Ave Maria is an experimental black metal project from Germany, formed in 2011, pushing the genre's boundaries through unconventional compositions and avant-garde approaches. The project's provocative religious name creates deliberate tension with its black metal framework.