 King joined Gorgoroth in 1999 just before the band's fifth album "Incipit Satan" was recorded.Although all the material for this album had already been written before King joined the band, he did write the music for five tracks on their next album, "Twilight of the Idols" (2003), and all of the music for "Ad Majorem Sathanas Gloriam" (2006), which was nominated for a 2006 Spellemann award in the 'Metal' category.King also reunited with former Gorgoroth drummer Kvitrafn to form a band, the “noisy black metal” project Jotunspor.