Mozart's Concerto No. 23 in A major for the Piano (Köchel 488) is a piece of music by Wolfgang Amadeus Mozart. It has three movements: (For a list organized by genre, see List_of_compositions_by_Wolfgang_Amadeus_Mozart) The Köchel-Verzeichnis is a complete, chronological catalogue of compositions by Wolfgang Amadeus Mozart which was originally created by Ludwig von Köchel. ... W. A. Mozart, 1790 portrait by Johann Georg Edlinger Wolfgang Amadeus Mozart(January 27, 1756 – December 5, 1791) is among the most significant and enduringly popular composers of European classical music. ... In music, a movement is a large division of a larger composition or musical form. ...

1. Allegro in A major and common time
2. Andante in F-sharp minor and 6/8 time
3. Presto in A major and cut time.

It was finished, according to Mozart's own catalogue, on March 2, 1786, but was probably begun in 1784, when he as enjoying his greatest success as a concerto pianist. It was one of three subscription concerts given that spring and was probably played by Mozart himself at one of these. Op. 82, No. 5, as it was known at the time, was scored for strings, one flute, two clarinets, two bassoons, and two horns. The concerto begins with an extended orchestral part followed by a piano solo, as with most concertos of the period and indeed all Mozart's concerto opening movements except for that of concerto 9 (the Jeunehomme); unusual in this concerto is the absence of a 'solo theme' such as had introduced the piano in several other concertos Mozart had written around the same time, and indeed the relations between piano and orchestra are mostly fairly uncomplicated in this work. In musical terminology, tempo (Italian for time) is the speed or pace of a given piece. ... A major is a major scale based on A, consisting of the pitches A, B, C#, D, E, F#, G#, and A. Its key signature consists of three sharps. ... The time signature (also known as meter signature) is a notational device used in Western musical notation to specify how many beats are in each bar and which note value (minim, crotchet, quaver, and so on) constitutes one beat. ... In musical terminology, tempo (Italian for time) is the speed or pace of a given piece. ... F-sharp minor is a minor scale based on F-sharp, consisting of the pitches F-sharp, G-sharp, A, B, C-sharp, D, E-sharp and F-sharp (harmonic minor scale). ... In musical terminology, tempo (Italian for time) is the speed or pace of a given piece. ... March 2 is the 61st day of the year in the Gregorian Calendar (62nd in leap years). ... 1786 was a common year starting on Sunday (see link for calendar). ... A string inyustrument (also stringed instrument) is a musical instrument that produces sound by means of vibrating strings. ... This article pertains to the musical instrument. ... A bass clarinet, which sounds an octave lower than the more common Bâ™­ soprano clarinet. ... A Fox Instruments bassoon; view detail. ... Horn may refer to: horn (anatomy), a hollow, pointed projection of the skin of various animals Horn, Austria horn (diacritic), a diacritic mark used to indicate that a normally rounded vowel such as o or u is to be pronounced unrounded horn (instrument) horn, a slang term for any wind...

Several points in the first movement however suggest what is to come in the next, and indeed the second movement is impassioned, somewhat operatic in tone. Formally this is a sonata form, the piano entering immediately with a theme that has unusually wide leaps; and also as with many such minor-mode sonata movements with Mozart, we hear the major-mode secondary material in minor in the end, an effective device. The third movement, is a rondo, shaded by moves into other keys as is the opening movement (to C major from E minor and back during the secondary theme in this case, for instance) and with a central section whose opening in F# minor is interrupted by a clarinet tune in D major, an intrusion that reminds us, notes Girdlestone, that instrumental music at the time was informed by opera buffa and its sudden changes of point of view as well as of scene. Rondo, and its French equivalent rondeau, is a word that has been used in music in a number of ways, most often in reference to a musical form, but also in reference to a character-type that is distinct from the form. ... C major (often just C) is a major scale based on C, consisting of the pitches C, D, E, F, G, A, B and C. Its key signature consists of no flats and no sharps. ... E minor is a minor scale based on E, consisting of the pitches E, F-sharp, G, A, B, C, D# and E (harmonic minor scale). ... D major is a major scale based on D, consisting of the pitches D, E, F#, G, A, B, C# and D. Its key signature consists of two sharps. ... Opera buffa (comic opera), also known as Commedia per musica (musical comedy), or Dramma giocoso per musica (musical dramatic comedy), is a form of opera. ...

The concerto has also been adapted to two pianos, one as the original piano and the other covering the orchestral parts, although in this format the repetition of themes can become rather wearisome.