The members of the Australian Opera and Ballet orchestra (AOBO) form one of the busiest and most versatile orchestras in Australia. Its home is one of the most famous modern buildings in the world, the Sydney Opera House, and the principal role of the AOBO is to be the indispensable orchestral partner of Australia's two premiere performing arts companies, Opera Australia and The Australian Ballet. In a typical year in Sydney the Orchestra will give some 175 performances of more than a dozen operas and more than 80 performances of four ballets. The Orchestra will work with perhaps a dozen different conductors, mastering performing traditions and repertoire ranging from Monteverdi to Berg and perform several Gala Concerts. The Sydney Opera House is one of the most iconic landmarks in the world, and since its opening it has become a symbol of Sydney Sydney Opera House at Night The Sydney Opera House is located in Sydney, New South Wales, Australia. ... Opera Australia is Australias major opera company, formed by the merger of the Australian Opera and the Victorian State Opera companies in 1996. ... Australian Ballet is a leading Ballet dance company in Australia. ...