The Symphony No. 36 in C major, K. 425, also known as the Linz Symphony, was written by Wolfgang Amadeus Mozart during a stopover in the Austrian town of Linz on his and his wife's way back home to Vienna from Salzburg in late 1783. The entire symphony was written in four days to accommodate the local count's announcement, upon hearing of the Mozarts' arrival in Linz, of a concert. The première in Linz took place on 4 November 1783. The composition was also premièred in Vienna on 1 April 1784. The autograph score of the "Linz Symphony" was not preserved, but a set of parts sold by Mozart to the Fürstenberg court at Donaueschingen in 1786 does survive.
The Bassoon Concerto in B-flat major, K. 191/186e, is a bassoon concerto written in 1774 by Wolfgang Amadeus Mozart. It is the most often performed and studied piece in the entire bassoon repertory. Nearly all professional bassoonists will perform the piece at some stage in their career, and it is probably the most commonly requested piece in orchestral auditions – it is usually requested that the player perform excerpts from the concerto's first two movements in every audition.
The Symphony No. 5 in B♭ major, K. 22, was composed by Wolfgang Amadeus Mozart in The Hague in December 1765, at the age of nine, while he was on his musical tour of Western Europe. Mozart fell seriously ill during his stay in The Hague, and he wrote this composition probably while he was convalescing from his illness.
The Symphony No. 29 in A major, K. 201/186a, was completed by Wolfgang Amadeus Mozart on 6 April 1774. It is, along with Symphony No. 25, one of his better known early symphonies. Stanley Sadie characterizes it as "a landmark ... personal in tone, indeed perhaps more individual in its combination of an intimate, chamber music style with a still fiery and impulsive manner."
Symphony No. 16 in C major, K. 128, was the first of three symphonies composed by Wolfgang Amadeus Mozart in May 1772 when Mozart was sixteen years old. This symphony is one of many written during the period in which Mozart stayed in Salzburg, between two trips to Italy. The autograph of the score is preserved in the Staatsbibliothek zu Berlin Preußischer Kulturbesitz.
Symphony No. 20 in D major, K. 133, was composed by Wolfgang Amadeus Mozart in July, 1772, when Mozart was sixteen years old. This symphony is one of many written during the period Mozart stayed in Salzburg, between two trips to Italy. Compared to other symphonies Mozart wrote in this period, the scoring is extravagant, featuring two trumpets in addition to the standard oboes, horns, and strings. The key of D major, which is a key often reserved for ceremonial music, is well suited to the presence of these trumpets.
The String Quartet No. 14 in G major, K. 387, nicknamed the "Spring" quartet, was composed by Wolfgang Amadeus Mozart in 1782 while in Vienna. In the composer's inscription on the title page of the autograph score is stated: "li 31 di decembre 1782 in vienna". The work was perhaps edited in 1783. This is the first of the Haydn Quartets, a set of six string quartets he wrote during his first few years in Vienna and dedicated to Joseph Haydn.
Violin Concerto No. 4 in D major, K. 218, was composed by Wolfgang Amadeus Mozart in 1775 in Salzburg. The autograph of the score is preserved in the Biblioteka Jagiellońska, Kraków. He seemed to have originally composed it for himself to play, but after leaving the Salzburg Court Orchestra, he changed and updated the concerto for the successor of his position in his orchestra, Antonio Brunetti, to play. It is debatable whether the concerto was above Mozart's level of mastery or if he purposely made the concerto difficult for Brunetti on account of his greater ability. The first movement is nicknamed the “military” Mozart Concerto while the second movement consists of melodic lines. The third movement is joyful and full of fun.
Symphony No. 34 in C major, K. 338, was written by Mozart in 1780, and completed on 29 August that year.
The Symphony No. 32 in G major, K. 318, was written by Wolfgang Amadeus Mozart in 1779, after his return from Paris.
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. 7 in D major, K. 45, by Wolfgang Amadeus Mozart, was completed in Vienna in January 1768 after the family's return from a visit to Olomouc and Brno in Moravia. The symphony is in four movements. Its first performance was probably at a private concert. The symphony was reworked to become the overture to Mozart's opera, La finta semplice, K. 51, composed and performed later that year, and the overture itself was subsequently adapted further to create a new symphony, known in the Köchel 1964 (K6) catalogue as K. 46a. The autograph of the score is preserved in the Staatsbibliothek Preusischer Kulturbesitz in Berlin.
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. 17 in G major, K. 129, is the second of three symphonies completed by Wolfgang Amadeus Mozart in May 1772, when he was 16 years old, but some of its sections may have been written earlier.
Symphony No. 19 in E-flat major, K. 132, is a symphony composed by Wolfgang Amadeus Mozart in July 1772.
The Symphony No. 23 in D major, K. 181/162b, by Wolfgang Amadeus Mozart was dated as complete on May 19, 1773. It is sometimes called "Overture", even though the autograph score bears the title "Sinfonia". The symphony is scored for 2 oboes, 2 horns, 2 trumpets, and strings.
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 C major "No. 46", K. 96/111b, was probably written by Wolfgang Amadeus Mozart in 1771 in Milan.
The Symphony in D major "No. 44", K. 81/73l, may have been written by Wolfgang Amadeus Mozart in 1770 in Rome, although it has sometimes also been attributed to his father Leopold Mozart.
