Common traits include a slow-paced and heavy riffing style, anthemic choruses, use of both sung and harsh vocals, a reliance on folk instrumentation, and often the use of keyboards for atmospheric effect.
[7] Nordic folk music encompasses traditions from Denmark, Norway, Sweden, Finland, Iceland and the dependent countries Åland, Faroe Islands, and Greenland, and nearby regions.
[17] Faroese music contains dances directly descended from medieval ballad and epic poems, particularly from literature in the Icelandic tradition,[18] and often follows unusual time signatures.
[28] It was headed by the early Norwegian black metal scene, through artists such as Mayhem, Darkthrone, Burzum, Immortal, Emperor, Satyricon, Thorns, Ulver, and Gorgoroth.
[41] Terje Bakken of Windir explained that ancient Nordic folk is easily integrated into metal idiom due to the "sad atmosphere" the two genres have in common.
[42] Though featuring these common traits, black metal spawned diverse musical approaches and subgenres, with some bands taking more experimental and avant-garde directions.
For instance, the lyrics to Led Zeppelin's "Immigrant Song" (1970) and "No Quarter" (1973) feature allusions to Viking voyages, violence, and exploration,[44] the former being inspired by the band's visit to Iceland while on tour.
Ashby and Schofield write that "The term 'Viking metal' is one of many that falls within a complex web of genres and subgenres, the precise form of which is constantly shifting, as trends and fads emerge and fade.
While retaining the noise and chaos of previous recordings, the band took a more sorrowful and melodic approach, working in ballads based on Germanic and Norse folklore, shanty-like melodies, ambience, choral intros, acoustic instruments, anthemic sections, and folk music elements such as bourdon sounds, Jew's harps, and fifes.
[73] Eduardo Rivadavia described the hallmarks of Enslaved as "Viking themes, razor sharp guitars, blastbeat drums, and an ear for orchestration resulting in complex structures, bountiful harmonies and time changes.
Instead, Viking bands limit themselves mainly to the use of Norse mythology as a textual source, which they often augment with stylized shanty-like melodies that are meant to evoke apropos images".
[60] It combines the exaltation of violence and virility through weapons and battlefields, which is common to many death and black metal bands, with an interest in ancestral roots, particularly a pre-Christian heritage, which is expressed through Viking mythology and imagery of northern landscapes.
[82] Visuals such as album art, band photos, website design, and merchandise all highlight the dark and violent outlook of Viking metal lyrics and themes.
[92] For example, English professor Heather Lusty writes that the lyrical content of Amon Amarth is historically inaccurate and is misappropriated to glorify drinking and pillaging.
[94] Many Viking metal bands identify first with local roots – for instance, Moonsorrow with Finland, Einherjer with Norway, Skálmöld with Iceland – with a wider northern European identity coming second.
[b] Heavy metal fans around the world sometimes learn languages such as Norwegian or Finnish in order to understand the lyrics of their favorite bands and improve their appreciation of the music.
[105] Irina-Maria Manea considers this preference to sing in a native language, along with the imagery of album covers, and stage performances which often involve warrior costumes, weapons, and sometimes reenactments, a demonstration of a völkisch aspect to Viking metal.
[106] Specifically, the thematic focus of Viking metal bands conceptualizes ethnicity as uniform, unchanged history from "time immemorial," which is, state Manea, "precisely in the völkisch framework.
[107] Many artists claim affiliation to the modern Pagan religion of Heathenry, treating Christianity as a foreign influence that was forcibly imposed, and therefore as a wrong to be righted.
Keevill concludes that, "It's not that bands like Amon Amarth shouldn't flout their Norse heritage, the bellicose nature of the ancestors or the kind of practices that would have taken place in far flung tribal societies, it's just that ruling out the presence of an overbearing Christian influence on the Viking Age is incredibly close-minded.
Witoszec traces the roots of this ideal to Tacitus's German-heathen identity narrative which romanticized the Germanic people as superior through their connection with nature, and whose brutality and belligerence opposed the apathetic and decadent Roman elite.
[127] With this album, Quorthon, the band's founder, inspired a generation of Nordic teens, and seeded a deep anti-Christian sentiment which culminated in the violence and hate crimes committed by members of the Norwegian black metal community in the early 1990s.
[133] A review of Eld (1997) noted that "Among the countless bands who were inspired by Bathory's seminal Viking metal, arguably none were as true to its gospel as Norway's Enslaved, whose utmost commitment even extended to donning vintage Norse armor and outfits on-stage".
[69] The band's 1994 debut album Vikingligr Veldi had "many melodies being borrowed from ethnic Scandinavian folk music to lend additional authenticity to the vicious, fast-paced black metal".
[134] Inspired by Bathory, Enslaved set out to "create Viking metal devoted to retelling Norway's legends and traditions of old – not attacking Christianity by means of its own creation: Satan.
Decibel explains that on Frost, bassist and vocalist Grutle Kjellson "knew it was time to reclaim the gods and goddesses of his ancestors, especially if it meant his version of things would inevitably clash with the Christianized fairytales so often associated with Nordic myth.
"[49] Ideologically, Varg Vikernes's one-man project Burzum helped inspire the Viking metal scene through his strongly held racist, nationalistic, and anti-Judeo-Christian beliefs, and his longing for a return to paganism.
[111] According to Trafford and Pluskowski, "proving both that it is not just the early medieval past to which he looks for inspiration, and that he will use any historical weapon at his disposal to offend Norwegian liberal opinion, it is notable that he has recently added the name Quisling to his own, and is even attempting to claim some sort of kinship to the wartime collaborator".
[158] Another Austrian example is Amestigon, which on the cover of its promotional album Remembering Ancient Origins depicts a wood carved scene of Sigurd killing Regin, an image taken from a panel held in Hylestad Stave Church.
"[172] The sensationalism of the early Norwegian black metal scene might be responsible for some of this popularity, but Weinstein considers the genre's greatest influence to be "the inspiration it has given to others to explore their own roots".