Helga Dernesch
Born: 3rd February 1939, Vienna
Nationality: Austrian
Helga Dernesch is an Austrian soprano and mezzo-soprano. Her career has taken her through four successive phases: from mezzo-soprano to lyric soprano to dramatic soprano, and after about 1980 back to mezzo again. "Her voice had great richness and power, and her strikingly handsome stage appearance and intense acting made her a compelling performer."
Read more at https://en.wikipedia.org/wiki/Helga_Dernesch