Here, Ulver give a very eclectic mixture of black metal plus folk, which is very expressive in a black metal way, though it is very different as of a lot of the conventions adopted by bands within the genre. Present is some acoustic guitar playing, clean as healthy as shrieking vocals, necro guitars, plus blastbeats. All of the lyrics are in archaic Danish, as opposite to English or the band's native Norwegian (while most European musicians sing in English, Norwegian black metal artists contain been known to employ their own language intended for aesthetic purposes).

The acoustic surface of the book was to be completely adopted in their next book, Kveldssanger, as the third book, Nattens Madrigal, consists of a completely raw black metal production and sound.