What metal group released their  second album  in 1999 by Season of Mist, who has had a Norwegian black metal band formed in 1984 in Oslo on their roster?
Mayhem (band) Mayhem is a Norwegian black metal band formed in 1984 in Oslo. They were one of the founders of the Norwegian black metal scene and their music has strongly influenced the black metal genre. Mayhem's early career was highly controversial, primarily due to their notorious live performances, the 1991 suicide of vocalist Per Yngve Ohlin ("Dead") and the 1993 murder of guitarist Øystein Aarseth ("Euronymous") by former member Varg Vikernes ("Count Grishnackh"), of Burzum.
Bloodthorn Bloodthorn is a Norwegian death metal band from Trondheim. Founded in 1992, they have gone through a number of musical developments. For example, their album "Under The Reign Of Terror" (2001) saw the band abandoning the female vocals (by Christine Hjertaas) and keyboards (by Geir Mikael Reijners) that had been so prominent on the first two albums and going back to their roots of raw, extreme metal. In 2006, Bloodthorn released their fourth album, "Genocide".