Maria Callas (December 2, 1923 – September 16, 1977) was an American-born Greek soprano and one of the most renowned opera singers of the 20th century. By combining an impressive bel canto technique, a wide-ranging voice and great dramatic talent, she became the most famous singing actress of the era. An extremely versatile singer, her repertoire ranged from classical opera seria to the bel canto operas of Donizetti, Bellini and Rossini; further, to the works of Verdi and Puccini; and, in her early career, to the music dramas of Wagner.

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