Boris Hristov

Boris Christoff (Bulgarian: Борис Кирилов Христов, romanized: Boris Kirilov Hristov, IPA: [boˈris ˈkiriɫof ˈxristof]; 18 May 1914 – 28 June 1993) was a Bulgarian opera singer, widely considered one of the greatest basses of the 20th century.