Piano Sonata No. 11 (Mozart)

The Piano Sonata No. 11 in A major, K. 331 / 300i, by Wolfgang Amadeus Mozart is a piano sonata in three movements. Mozart likely composed the sonata while in Vienna or Salzburg by around 1783, although Paris and dates as far back as 1778 have also been suggested.
The sonata was published by Artaria in 1784, alongside Nos. 10 and 12 (K. 330 and K. 332).
Structure.
The sonata consists of three movements:
All of the movements are in the key of A major or A minor; therefore, the work is homotonal. A typical performance of this entire sonata takes about 20 minutes.
I. "Andante grazioso".
Since the opening movement of this sonata is a theme and variation, Mozart defied the convention of beginning a sonata with an allegro movement in sonata form. The theme is a siciliana, consisting of two 8-measure sections, each repeated, a structure shared by each variation. The tempo marking is "Andante grazioso" (walking pace, gracefully). It is in the key of A major.
II. "Menuetto".
The second movement of the sonata is a standard minuet and trio movement in A major. The minuet is 40 measures long, and the trio is 52.
III. "Alla turca".
The last movement, marked "Alla turca", popularly known as the "Turkish Rondo" or "Turkish March", is often heard on its own and is one of Mozart's best-known piano pieces.
\time 2/4 \partial 4 \tempo "Allegretto" 4=126 b16-4\p^"P.T. H.S."( a gis a-1 c8-.-3) r d16-3( c b c e8-.-4) r f16-4( e dis e-1 b'-4 a gis a b a gis a c4->) a8-.-2 c-.-4 \appoggiatura {g!32[_"(a)" a]} b8-.->[ «fis-2 a-.-4» «e g-.» «fis a-.]» \appoggiatura {g32-2[ a]} b8-.->[ «fis-2 a-.-4» «e g-.» «fis a-.]» \appoggiatura {g32-2[ a]} b8-.->[ «fis a-.-4» «e g-.» «dis-2 fis-.-4]» e4-- \bar ":..:" «c8-1\mp e-.-3» «d! f!-.» «e-1 g-.-3» «e g-.» a16-4( g f e) «{d4->-2-4}\\{b8( g)}» «c e-.» «d f-.»
}\new Staff{
\clef "bass" r4 a,8-5([ «c e-.)» «c e-.» «c e-.]» a,([ «c e-.)» «c e-.» «c e-.]» a,-.[ «c e-.» a,-. «c e-.]» a,([ «c e-.)» «c e-.» «c e-.]» e,-.->[ <> <> <> e,-.->[ <> <> <> e,-.->[ <> b,-. b'-.] e,4-- r c8-.[ c'-. e,-. e'-.] g,4 r
}» } } </score>
Mozart himself titled the rondo "Alla turca". It imitates the sound of Turkish Janissary bands, the music of which was much in vogue at that time.
Various other works of the time imitate this Turkish style, including Mozart's own opera "Die Entführung aus dem Serail". In Mozart's time, the last movement was sometimes performed on pianos built with a "Turkish stop", allowing it to be embellished with extra percussion effects.
The third movement is a rondo in the form A–B–C–D–E–C–A–B–C–coda, with each section (except the coda) being repeated.
Relationships to later compositions.
The theme of the first movement was used by Max Reger in his "Variations and Fugue on a Theme by Mozart" (1914) for orchestra. Dave Brubeck's "Blue Rondo à la Turk" (1959) is "not" based on or related to the last movement.
2014 autograph discovery.
In 2014, Hungarian librarian Balázs Mikusi discovered four pages of Mozart's original score (autograph) of the sonata in Budapest's National Széchényi Library. Until then, only the last page of the autograph had been known to have survived. The paper and handwriting of the four pages matched that of the final page of the score, held in Salzburg. The original score is close to the first edition, published in 1784.
In the first movement, however, in bars 5 and 6 of the fifth variation, the rhythm of the last three notes was altered. In the menuetto, the last quarter beat of bar 3 is a C-sharp in most editions, but in the original autograph an A is printed. In the first edition, an A is also printed in bar 3, as in the original, but on the other hand a C-sharp is printed in the parallel passage at bar 33, mirroring subsequent editions.
In September 2014, Zoltán Kocsis gave the first performance of the rediscovered score.