Which Russian opera singer with a basso profundo vocal range died April 12, 1938?
Basso profondo Basso profondo (Italian: "deep bass"), sometimes basso profundo or contrabass, is the bass voice subtype with the lowest vocal range.
Wilma Driessen Wilma Driessen (born Wilhelmina Jacoba Driessen, December 6, 1938) is a Dutch opera singer. Her voice is that of a coloratura soprano. She is known for her versatility and extraordinary vocal expression.