(EN) Thom Jurek, Ulver, su AllMusic, All Media Network. URL consultato il 13 ottobre 2025.
«Though initially regarded as a black metal band, they have worked in numerous genres. [...] They [...] shifted gears with the completely acoustic Kveldssanger. In the 21st century, they experimented with electro-acoustic music [...], ambient soundtracks, [...] and gothic-influenced pop.»
