Despite being primarily known for his work as the vocalist and lead guitarist of black metal group Urgehal, which he founded in 1992 alongside Thomas "Enzifer" Søberg,[1] he had numerous other projects as well, such as Beastcraft (in which he performed as "Alastor Nefas"), In Lingua Mortua, Endezzma (formerly known as Dim Nagel) and Angst Skvadron.

In all of those side projects he collaborated with fellow musician and former Ásmegin member Lars Fredrik Frøislie.

On the following day they released a statement via their record label, Season of Mist: Prior to his death Bråthen was working on a documentary about the Norwegian black metal scene, entitled A Black Metal Year in Norway.

[4]) Around the same time Urgehal began work on their seventh studio album, Aeons in Sodom, which remained unfinished until 2016 – it was eventually finished with the help of numerous guest musicians and released on 12 February.

He is survived by his brother, Thomas Bråthen, and by fiancée Octavia.