 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".