an Entity references as follows:
Franz Mazura (born 22 April 1924 in Salzburg) is an Austrian bass-baritone opera singer and actor. He was made a Kammersänger in 1980 and an Honorary Member of the National Theater of Mannheim in 1990. He most often plays villains and strange characters. Mazura appears on two Grammy Award winning recordings: as Dr. Schön in Lulu, conducted by Pierre Boulez (Best Opera Recording 1980) and as Moses in Moses und Aron, conducted by Sir Georg Solti (Best Opera Recording 1985).