Carpathian Forest is an old school/atmospheric black metal band, Nattefrost goes even further incorporating more punk influence, stylistically similar to early Mayhem releases such as Deathcrush. The first release, Blood & Vomit, was almost completely performed by Nattefrost, with additional help from a number of musicians from other bands Nattefrost has associated with. Vrangsinn, the bassist and backup vocalist of Carpathian Forest, performed backup vocals on tracks 1, 2 and 8, and bass guitar on track 3. Nordavind performed vocals on track 5 and the backing vocals on track 3. Evind Kulde, who is also part World Destroyer along with Vrangsinn, performed backing vocals on track 2.
While the first Nattefrost album is primarily performed by R. Nattefrost, Terrorist, is an enormous conglomeration of many musicians, often with the same person(s) playing different instruments on different tracks, or completely different line-ups altogether.