The Mexican contralto, Oralia Dominguez, studied at the National Conservatory in Mexico City, during which time she made her first appearance as a singer in Debussy's La Damoiselle élue.
After making her stage debut 30 the Mexico City Opera in 1950, Oralia Dominguez made her European debut at a concert at London's Wigmore Hall in 1953, and then toured in France, Spain, Germany, and Holland. That same year she appeared as Princess de Bouillon in Adrienne Lecouvreur at Milan's La Scala. She then sang opera in Naples, Brussels, Vienna, and Paris. In 1955 she created the role of Sosostris in Tippett's A Midsummer Marriage at London's Covent Garden, and then appeared regularly at the Glyndebourne Festivals from 1955 to 1964. She was a member of the Deutsche Oper am Rhein in Düsseldorf from 1960. She also appeared as soloist with major orchestras and as a recitalist.