Yvonne Kenny when she replaced, with only four days' notice, the soprano scheduled to sing in an Opera Rara concert performance of Donizetti's "Rosmonda d'Inghilterra" at the Queen Elizabeth Hall. It was a triumph and the virtually unknown Kenny became an overnight star. She made her debut at the Royal Opera House the following year, in the premiere of Hans Werner Henze's "We Come to the River", later singing in Handel operas such as: "Semele", "Alcina", "Giulio Cesare", and such Mozart operas as: "Idomeneo", "Mitridate, re di Ponto", "La clemenza di Tito", "The Abduction from the Seraglio", "The Magic Flute". She also
Joan Carden sang a concert repertoire including Verdi's "Requiem", appearing with Sydney Philharmonia and other ensembles. Overseas, she sang Gilda ("Rigoletto") at Covent Garden in 1974, Donna Anna ("Don Giovanni") at the 1977 Glyndebourne Festival (in the production by Sir Peter Hall) and with the Metropolitan Opera in 1978. Her American debut, however, was as Amenaide with the Houston Grand Opera opposite Marilyn Horne in Rossini's "Tancredi". She also appeared as Constanza ("The Abduction from the Seraglio") with Scottish Opera in 1978. In 1980, she performed with the National Symphony Orchestra at the Kennedy Center in Washington, D.C. She sang the four