Grace Melzia Bumbry (January 4, 1937 – May 7, 2023) was an American opera singer, considered one of the leading mezzo-sopranos of her generation, who also ventured to soprano roles. She belonged to a pioneering generation of African-American classical singers, begun by Marian Anderson. She was recognized internationally when Wieland Wagner cast her for the 1961 Bayreuth Festival as Venus in Tannhäuser, the first black singer to appear at the festival.
Bumbry’s voice was rich and dynamic, possessing a wide range, and was capable of producing a very distinctive plangent tone. In her prime, she also possessed good agility and bel canto technique, as for example her rendition of Eboli in Verdi’s Don Carlo in the 1970s and 1980s. She was particularly noted for her fiery temperament and dramatic intensity on stage. Later, she also became known as a recitalist and interpreter of lieder, and as a teacher. From the late 1980s on, she concentrated her career in Europe, rather than in the United States. A long-time resident of Switzerland, she spent her last years in Vienna.
source- Wikipedia