Mayhem is a Norwegian black metal band formed in 1984 in Oslo. Members include; Necrobutcher, Hellhammer, Attila Csihar, Teloch, Ghul, Euronymous, Manheim, Messiah, Dead, Maniac, Blasphemer, Torben Grue, Kittil Kittilsen, Count Grishnackh, Blackthorn. Discography inlcudes; De Mysteriis Dom Sathanas (1994), Grand Declaration of War (2000), Chimera (2004), Ordo ad Chao (2007), Esoteric Warfare (2014). TOurs includel; 25 Years of Chaos, 30th Anniversary Tour 2014, Australia and New Zealand Tour, Black Metal Warfare, Black Metal Warfare Pt II, Blackenedfest, Blackenedfest 2009, Chimera, De Mysteriis Dom Sathanas, Disorder and Regression Brazil 2011, Eindhoven Metal Meeting, Extreme The Dojo Vol.20, For The Love Of Kebab, Grand Declaration of War, Inferno Festival 2010, L’Enfant Sauvage, Latin America Tour October 2016, Mexican Tour 2016, North American Deathcrush Tour, Ordo ad Chao Tour, Purgatorium Europæ MMXVII, Purgatorium Rutheniæ MMXVII, Tuska Afterparty, US Legions, Wolf's Lair Abyss Tour.