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
Symphony, K. 196+121 (Mozart) Symphony, K. 196+121 (Mozart) The Symphony in D major "No. 51", K. 196+121, was composed by Wolfgang Amadeus Mozart in 1774–1775. The first two movements are from the overture to the opera "La finta giardiniera", K. 196, and the last movement, K. 121/207a, was composed separately in 1775. (The dating of the last movement was questioned by Alan Tyson as the paper used was purchased by Mozart in Milan in late 1772 and used until early 1773, but Mozart apparently took some of this paper back to Salzburg and used it in 1776.) \relative c' { </score> The symphony is