A progressive death metal band from Innsbruck, Austria, whose five-piece lineup wields eight-string guitars, djent-influenced rhythms, and multi-faceted vocals across complex, varied songwriting. Their album 'Killer Suites' is their most prominent release, and they also operate the related project Church of the Machine.

Division of Madness is a heavy/progressive metal and rock band from Stuttgart, Germany, formed in 2020. They explore the intersection of heavy metal, progressive rock, and controlled chaos.

Dizident plays progressive melodic death metal and metalcore from Ploiesti in Wallachia, active since 2007 and channeling political and social dissidence through technically accomplished compositions. Their dissident name speaks to the rebellious spirit driving nearly two decades of genre-crossing extreme metal.

Djizoes is a progressive metal band from Geneva, active since 2017 and bringing francophone sophistication to complex, multi-layered compositions. Their exploratory approach draws from the rich Swiss tradition of precision musicianship applied to boundary-pushing metal.

Docile plays progressive death metal from Zwolle, formed in 2024 and whose deliberately tame name stands in ironic contrast to the complexity and intensity of their music. Their compositions prove that docility is the last thing their progressive death metal offers.

Dol Ammad is an epic space metal project from Thessaloniki, Greece, created in 2004 by composer Thanasis Lightbridge, merging bombastic power metal with synthesizers and classical choirs. Part of Lightbridge's trilogy of fusion projects alongside Dol Theeta and Dol Kruug, the discography spans from Star Tales (2004) and Ocean Dynamics (2006) through Winds of the Sun (2010) to Stella Nova (2025).

Dol Theeta is a progressive and symphonic metal project with electronic music influences from Thessaloniki, Greece, formed in 2008 by composer Thanasis Lightbridge. A sister project to Dol Ammad, the band explores the fusion of electronic music and heavy metal from a progressive angle.

Dominant Chain plays melodic progressive metal from the rural municipality of Sonkajarvi in eastern Finland, formed in 2025 and bringing complex, melody-driven compositions from one of Finland's most remote corners. Their name's image of unbreakable sequence translates into tightly linked musical passages.

Doomed from Day One is a progressive deathcore band from Guildford, Surrey, formed in 2011 and described as merging prog, tech, and death metal into a fiery hybrid. Their releases The Wasted World (2011) and the Nine Fingers EP (2013), recorded by Chris Munday at CJM Productions, earned them a reputation for savage live shows and impeccable musicianship.