Our World included the opera singer best known for what technique?
Maria Callas Maria Callas, Commendatore OMRI (Greek: Μαρία Κάλλας ; December 2, 1923 – September 16, 1977), was a Greek-American soprano, and one of the most renowned and influential opera singers of the 20th century. Many critics praised her "bel canto" technique, wide-ranging voice and dramatic interpretations. Her repertoire ranged from classical "opera seria" to the "bel canto" operas of Donizetti, Bellini and Rossini and further, to the works of Verdi and Puccini; and, in her early career, to the music dramas of Wagner. Her musical and dramatic talents led to her being hailed as "La Divina".
Nell Rankin Nell Rankin (January 3, 1924 – January 13, 2005) was an American operatic mezzo-soprano. Although a successful opera singer internationally, she spent most of her career at the Metropolitan Opera where she worked from 1951-76. She was particularly admired for her portrayals of Amneris in Verdi's "Aida" and the title role in Bizet's "Carmen". "Opera News" said, "Her full, generous tone and bold phrasing, especially in the Italian repertory, were unique among American mezzos of her generation.