Wardruna is a Norwegian band dedicated to the creation of musical interpretations of cultural and esoteric Nordic traditions. It was formed in 2003 by Einar Selvik together with Gaahl and Lindy Fay Hella. The band has released three full-length albums, each based on a set of runes. 
Its third album, Runaljod - Ragnarok, was released on October 21, 2016. 

Wardruna makes significant use of historical and traditional Norse instruments including percussion, flutes, kraviklyra, tagelharpe, mouth harp, goat horn and lur. Non-traditional instruments and other sound sources such as trees, rocks, water and torches are also used.

     The band sings their songs in Norwegian, Old Norse and Proto-Noric, and bases the setting of their songs on the symbols of the runes, often recording some songs outdoors to make the sound more suited to the mystical theme of the runes.

     All this musical production was based on the project of a trilogy of albums called Runaljod that begins in Runaljod - gap var Ginnunga (2009), through Runaljod - Yggdrasil (2013) and finishing in the third album Runaljod - Ragnarok (2016).

     Wardruna is responsible for one of the main and powerful aesthetics of Vikings: The soundtrack
The band participated in the making of the second season of the series. Thanks in part to the success of the Vikings, the band's album in 2016, Runaljod Ragnarok, debuted at number one on Billboard's worldwide album list.

     Everything, absolutely everything, that a director puts on screen should have the purpose of complementing the experience of the viewer with his work. Framing, photography, costumes, ester eggs among other visual techniques are extremely important to define the singular aesthetic of that television series or film, but a significant percentage of this set should be given to the sonorous work, after all, it is completely connected to the sentimental part and is the way the viewer will closely remember that work.

     In addition to the intentional pale photograph of Michael Hirst, the game with religiosity and its conflicts, music is one of the greatest narrative powers that Vikings possessed. In many moments you do not need any dialogue, just the sound of the drums and soft lyrical voices to trap you and get emotional with what is presented to you on screen. The soundtrack is one of the main parts that stand out in the aesthetics of the series and the person in charge of it has name: the Norwegian band Wardruna.