https://en.wikipedia.org/wiki/Tatiana_Troyanos
Tatiana Troyanos (September 12, 1938 – August 21, 1993) was an American mezzo-soprano of Greek and German descent, remembered as "one of the defining singers of her generation" (Boston Globe). Her voice, "a paradoxical voice — larger than life yet intensely human, brilliant yet warm, lyric yet dramatic" — "was the kind you recognize after one bar, and never forget", wrote …