Long-running experimental sludge and doom outfit from Liege, Belgium, active since 2004, blending death metal, doom-rock, avant-garde psychedelia, and electronic soundtracks as a tribute to rock culture. Their extensive catalog spans seven releases including Sowberry Hagan, The Art of Spectres, and Lungville.

Experimental black metal project from Poitiers, France, active since 2021 and deconstructing black metal conventions through an avant-garde lens. Their name itself signals a rejection of binary categorization in favor of experimental freedom.

Experimental drone and funeral doom project from Oxfordshire, England, named after the quantum physics concept, active since 2017. Their sound explores the slowest, heaviest extremes of metal through drone and funeral doom's monolithic compositions.

Experimental doom metal band from Athens, Greece, active since 2007, known for their progressive approach incorporating atmospheric and ambient passages into doom metal. Their extensive discography includes albums like Never, EASE, and Change, establishing them as innovators in Greek doom.

Urgraven is an experimental black metal project from Tyumen, Russia, one of the longest-running acts in the Siberian underground with origins dating back to 1999. The project pushes black metal into avant-garde territory from deep within Western Siberia.