 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".Following the release of "Genocide", Bloodthorn played at several festivals, including Inferno and Wacken Open Air 2006 as well as Hole in the Sky 2007, and did a European and Scandinavian tour, with Carpathian Forest and Vader respectively.