Symphony No. 40 in G minor, K. 550 was written by Wolfgang Amadeus Mozart in 1788. It is sometimes referred to as the "Great G minor symphony", to distinguish it from the "Little G minor symphony", No. 25. The two are the only extant minor key symphonies Mozart wrote.
The Symphony No. 31 in D major, K. 297/300a, better known as the Paris Symphony, is one of the most famous symphonies by Wolfgang Amadeus Mozart. It may have been first of his symphonies to be published when Seiber released their edition in 1779.
The Symphony No. 4 in D major, K. 19, by Wolfgang Amadeus Mozart was composed in London during the Mozart family's Grand Tour of Europe in 1765, when Mozart was nine years old.
The Symphony No. 8 in D major,, by Wolfgang Amadeus Mozart is dated December 13, 1768. Mozart wrote the symphony in Vienna, when he was twelve years old, at a time when he and his family were already due to have returned home to Salzburg. In a letter to his friend in Salzburg, Lorenz Hagenauer, Leopold Mozart says of the delay that "we could not bring our affairs to a conclusion earlier, even though I endeavored strenuously to do so." The autograph of the Symphony No. 8 is today preserved in the Staatsbibliothek Preusischer Kulturbesitz in Berlin.
Symphony No. 6 in F major, K. 43, was composed by Wolfgang Amadeus Mozart in 1767. According to Alfred Einstein in his 1937 revision of the Köchel catalogue, the symphony was probably begun in Vienna and completed in Olomouc, a Moravian city to which the Mozart family fled to escape a Viennese smallpox epidemic; see Mozart and smallpox.
Symphony No. 9 in C major, K. 73/75a, by Wolfgang Amadeus Mozart, has an uncertain provenance. The most likely date of its composition appears to be late 1769 or early 1770 during Mozart's first Italian journey, although some authorities have dated it "probably not before early summer 1772". It may have been started in Salzburg, before the first Italian journey began, and completed during the trip.
Symphony No. 12 in G major, K. 110/75b, by Wolfgang Amadeus Mozart, was composed in Salzburg in the summer of 1771. The symphony was apparently prepared in anticipation of Mozart's second Italian journey, which was to take place between August and December 1771. The symphony is in four movements, the opening allegro being the longest movement that Mozart had written to that date. It is the first of a group of works "painted on a larger canvas and achieving a greater individuality than his earlier exuberant pieces".
The Symphony No. 15 in G major, K. 124 by Wolfgang Amadeus Mozart was written in Salzburg during the first weeks of 1772. A note on the autograph manuscript indicates that it might have been written for a religious occasion, possibly in honour of the new Archbishop of Salzburg. The work is in four movements, the first of which has been described as innovative and "daring", in view of its variations of tempo. The last movement is characterised by good humour and frivolity, with "enough ending jokes to bring the house down".
Symphony No. 11 in D major, K. 84/73q, was at one time considered unquestionably to be the work of Wolfgang Amadeus Mozart. Its status has, however, been challenged, and remains uncertain. It is believed to date from 1770, and may have been written in Milan or Bologna, if it is a genuine Mozart work. An early manuscript from Vienna attributes the work to Wolfgang, but nineteenth-century copies of the score attribute it respectively to Leopold Mozart and to Carl Dittersdorf. Neal Zaslaw writes: "A comparison of the results of two stylistic analyses of the work's first movement with analyses of unquestionably genuine first movements of the period by the three composers suggests that Wolfgang is the most likely of the three to have been the composer of K73q".
This list of Mozart symphonies of spurious or doubtful authenticity contains 39 symphonic works whose initial attribution to Wolfgang Amadeus Mozart has subsequently been proved spurious, or is the subject of continuing doubt. The number of symphonies actually written by Mozart is imprecisely known; of the 41 formally numbered, three are established as by other composers and another, No. 11, is considered by scholars to be of uncertain authenticity. Outside the accepted sequence 1–41, however, there are around twenty other genuine Mozart symphonies, and beyond these, a larger number of problematic works which have not been authenticated as Mozart's. Some of these may be genuine; dubious works are often treated as authentic by the compilers of collected editions—eight are in the main body of the 1991 Neue Mozart-Ausgabe, and another two are included in the supplementary 2000 volume of works of doubtful authenticity. Some, however, have long been accepted as the works of other composers, who in many instances have been positively identified.
The Mozart family grand tour was a journey through western Europe, undertaken by Leopold Mozart, his wife Anna Maria, and their musically gifted children Maria Anna (Nannerl) and Wolfgang Theophilus (Wolferl) from 1763 to 1766. At the start of the tour the children were aged eleven and seven respectively. Their extraordinary skills had been demonstrated during a visit to Vienna in 1762, when they had played before the Empress Maria Theresa at the Imperial Court. Sensing the social and pecuniary opportunities that might accrue from a prolonged trip embracing the capitals and main cultural centres of Europe, Leopold obtained an extended leave of absence from his post as deputy Kapellmeister to the Prince-Archbishopric of Salzburg. Throughout the subsequent tour, the children's Wunderkind status was confirmed as their precocious performances consistently amazed and gratified their audiences.
The Symphony in F major "No. 42", K. 75, was written by Wolfgang Amadeus Mozart probably around March to August 1771 in Salzburg.
The Symphony in F major "No. 43", K. 76/42a, was probably written by Wolfgang Amadeus Mozart.
The Symphony in B♭ major "No. 55", K. Anh. 214/45b, was probably written by Wolfgang Amadeus Mozart in early 1768 in Salzburg.
The Symphony in C major "No. 46", K. 96/111b, was probably written by Wolfgang Amadeus Mozart in 1771 in Milan.
The Symphony in D major "No. 45", K. 95/73n, was probably written by Wolfgang Amadeus Mozart in 1770 in Rome.
The Symphony in D major "No. 47", K. 97/73m, was probably written by Wolfgang Amadeus Mozart in 1770 in Rome.
The Symphony in F major "No. 56", K. 98/Anh.C 11.04, was once thought to have been written by Wolfgang Amadeus Mozart, but today is regarded as spurious. As of 2009, it is the only one of Mozart's symphonies published in the Alte Mozart-Ausgabe that has never been recorded. It is not included in the Neue Mozart-Ausgabe.
The Symphony in A minor "Odense", K. Anh. 220/16a, was formerly attributed to Wolfgang Amadeus Mozart. If the Odense Symphony had truly been Mozart's, it would be among only three of Mozart's symphonies to be written in a minor key. It is now considered certain that the symphony is not by Mozart.
The Missa brevis No. 7 in C major, K. 258, is a mass composed by Wolfgang Amadeus Mozart in 1776. It is scored for SATB soloists, SATB choir, violin I and II, 2 oboes, 2 clarini, 3 trombones colla parte, timpani and basso continuo.
