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
Wolfgang Amadeus Mozart and Prague as both a composer and a performer. The great success of this visit generated a commission from the impresario Pasquale Bondini for another opera, which like "The Marriage of Figaro" was to have a libretto by Mozart's great collaborator Lorenzo Da Ponte. Mozart came to Prague for the second time to help supervise the first performance of his opera "Don Giovanni". He arrived on 4 October 1787 and stayed until 12 or 13 November. The premiere of the opera was supposed to have taken place on 15 October, but could not be arranged until 29 October 1787. The work was