Vestas Feuer by Pamina and Papageno in "The Magic Flute"), which has the same key and time signature and was the subject of a set of variations for cello and piano by Beethoven (WoO 46), written 1801. Lockwood also discerns a precedent set by Mozart involving formal structure: an "Introduzione"; i.e. Beethoven's scene forms a separable initial section of an opera having some degree of integrity of both plot and harmonic plan; Lockwood calls the "Introduzione" a "miniplay". Three of Mozart's operas begin with such an "Introduzione": "Don Giovanni", "Così fan tutte", and "The Magic Flute". Beethoven's "Introduzione" has a harmonic structure
Opera Australia Butterfly", "Turandot", "Aida" and "Carmen" have played. In 1956, the Australian Opera Company was formed in Sydney under the auspices of the Australian Elizabethan Theatre Trust. It commemorated the Mozart bicentenary by presenting four Mozart operas in all capital cities, travelling more than 10,000 kilometres, and giving 169 performances. By 1957, it changed its name to the Elizabethan Theatre Trust Opera Company. In 1959 the company's laid-off singers gave the first of many regional tours (presented by state Arts Councils) with Rossini's "The Barber of Seville" using reduced scenery and conducted from the piano by Georg Tintner (Victoria, New South