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
La Scala, Fortitude Valley Wickham Terrace but continued to live in the house, renting out the ground floor to another doctor. The house and surgery were owned and occupied by a number of doctors over the years before being turned into flats in the 1970s. The original stables were demolished and a small addition was built on the rear of the house. In 1980 the property was bought by Brisbane architect Robert Riddel who restored it and renamed it "La Scala". The ground floor, which was enlarged in the 1980s, housed an architectural practice for some years until 1992 and is now divided into