Viennese Quartets (Mozart)
Introduction The '''six string quartets, K. 168–173''', were composed by Wolfgang Amadeus Mozart in late 1773 in Vienna. These are popularly known as the '''Viennese Quartets'''. Mozart may have hoped to have them published at the time, but they were published only posthumously by Johann André in 1801 as Mozart's Op. 94.These quartets represent a considerable advance on the Milanese Quartets from less than a year before. Each contains four movements, including minuets and trios. Mozart had been exposed to recently published quartets by Joseph Haydn (Opp. 9 and 17) and was incorporating many of their elements.
The Six Viennese Quartets ===String Quartet No. 8 in F major, K. 168===#''Allegro''#''Andante''#''Menuetto''#''Allegro Assai''The first movement is in sonata form. The slow movement in F minor is a triple-meter canon on the familiar theme also used in the finale of Haydn's Op. 20 No. 5 quartet in the same key, and that Mozart would much later use in the ''Kyrie'' from his Requiem. The third movement is in ternary form, with a minuet and trio. The finale is a fugue which is also similar to one of the finales of Op. 20, this time the A major quartet (No. 6).===String Quartet No. 9 in A major, K. 169===#''Molto allegro''#''Andante''#''Menuetto''#''Rondeaux Allegro''===String Quartet No. 10 in C major, K. 170===  #''Andante''#''Menuetto''#''Un poco adagio''#''Rondeaux Allegro''The opening movement is a theme and variations with a theme that resembles the variation theme used in Haydn's Quartet Op. 9, No. 5 in B-flat. The second phrase of the slow movement contains the opening theme of Haydn's Op. 9 No. 4 in D minor.===String Quartet No. 11 in E-flat major, K. 171=== #''Adagio – Allegro Assai''#''Menuetto''#''Andante''#''Allegro assai''===String Quartet No. 12 in B-flat major, K. 172===   #''Allegro spiritoso''#''Adagio''#''Menuetto''#''Allegro assai''===String Quartet No. 13 in D minor, K. 173===#''Allegro ma molto moderato''#''Andantino Grazioso''#''Menuetto''#''Allegro moderato''The beginning of the minuet is similar to, and based on, the minuet from Haydn's Op. 9 No. 4 in D minor. The finale is a fugue whose subject begins with a descending chromatic fourth.
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