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.
Sofia Scalchi Sofia Scalchi (November 29, 1850 – August 22, 1922) was an Italian operatic contralto who could also sing in the mezzo-soprano range. Her career was international, and she appeared at leading theatres in both Europe and America.