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.
Conchita Supervía Conchita Supervía (8–9 December 1895 – 30 March 1936) was a highly popular Spanish mezzo-soprano singer who appeared in opera in Europe and America and also gave recitals.