If you've read about Kvelertak in the media then you will probably have heard that Kvelertak is a combination of hard rock and black metal. While technically true, this album is 10 parts rock to 1 part black metal, with the black metal largely being restricted to the tracks "Ulvetid", "Necroskop" and "Liktorn". In fact, in spirit Kvelertak are the antithesis of black metal - where the latter channels emotions of despair and hatred "Kvelertak" is the most upbeat release I've heard this year. These guys are all about rocking out and in this they succeed; if you don't get the urge to sing along with these songs (though this is difficult for non-Norwegian speakers such as myself) then you must be deaf or emotionally barren.
Kvelertak's music is reminiscent of virtually any of the rock greats of old as well as newer garage rock bands. In fact the riffs are so instantly familiar they could have been taken from any of your favourite rock albums. What prevents Kvelertak from being generic copy-cats is that they do what they do very well indeed. They are also much heavier than most straight-up rock bands with occasional blast beats, harshly shouted vocals occasionally bordering on black metal screeching, and a guitar sound big enough to knock you over. This plants them in a limbo between rock and metal, leading to the somewhat questionable touring buddies of Kylesa and Converge - bands which have very little in common with Kvelertak. So broad is this band's appeal however that are equally able to recruit fans like your father, who listens to nothing but The Rolling Stones and Zeppelin, and your anti-social reclusive friend that spends his hours listening to endless Eyehategod clones.
You need to buy this record. Hell, even if you don't like rock it's worth having just for the beautiful cover artwork by John Baizley of Baroness.