Opera Australia Orchestra associated with working in the Sydney Opera House orchestra pit. The OAO provides orchestral accompaniment to Opera Australia and The Australian Ballet and is one of the few opera orchestras in the world that operates in a repertory style of operation over a period, or season, that can be some months in length. Other opera houses that operate this way are The Metropolitan Opera in New York City, The Royal Opera House Covent Garden in London and La Scala, Milan. 'Repertory style' also infers that over time, certain composers and operas become considered 'standard' to the working operation of the
Fedora (opera) however, operatic tastes had changed, and the opera became performed more sporadically. The 1990s saw a resurgence of interest in "Fedora", with new productions at the Vienna Staatsoper, La Scala, New York's Metropolitan Opera, Chicago Lyric Opera, the Royal Opera House, Covent Garden, the Washington National Opera and the Teatro Colón in Buenos Aires. Notable singers in post-1990 productions include Mirella Freni, Renata Scotto, Agnes Baltsa, Katia Ricciarelli, and Maria Guleghina as Fedora; and Plácido Domingo, José Carreras, and José Cura as Loris. Among "Fedora's" most recent performances are those at the Vienna Staatsoper in 2003, La Scala in 2004,