Gylve Fenris Nagell, known professionally as Fenriz, is a Norwegian musician, part-time music journalist and online radio host who is best known as being one half of the black metal duo Darkthrone, alongside Nocturno Culto. Although primarily a drummer and songwriter, he has also played bass and guitar and performed vocals for Darkthrone and several other metal bands. Fenriz is famed for his encyclopedic knowledge of metal music, his eager promotion of underground bands and the DIY ethic, and his rejection of the "showbiz side of the music industry". Fenriz was also the studio drummer for doom metal band Valhall, and has had several solo projects, including the folk black metal project Isengard and the dark ambient project Neptune Towers.

Under a Funeral Moon is the third studio album by the Norwegian black metal band Darkthrone. It was recorded in June 1992 and released on 15 February 1993 by Peaceville Records. Written and recorded to create a "pure black metal album", it is the second of what is dubbed the band's "Unholy Trinity", along with A Blaze in the Northern Sky and Transilvanian Hunger. Under a Funeral Moon was the last album on which guitarist Zephyrous performed; he left the band shortly after its release.