Attila Csihar (Hungarian: [ˈɒtilːɒ ˈtʃihɒr]; born 29 March 1971), also sometimes known as Void, is a Hungarian black metal vocalist, best known for his vocal work on Mayhem's De Mysteriis Dom Sathanas album. Author Ian Christe describes his vocals as "operatic."He graduated as an electrical engineer, and is a former private teacher of mathematics and physics. He is a divorced father of two children, Arion and Julia.