The sonata form is a musical structure generally consisting of three main sections: an exposition, a development, and a recapitulation. It has been used widely since the middle of the 18th century.
Haydn as portrayed by John Hoppner in England in 1791
The opening of Mozart's "Dissonance" Quartet, K. 465, which begins with an introduction
Watercolour of Franz Schubert, who is known for using three-key expositions
Franz Joseph Haydn was an Austrian composer of the Classical period. He was pivotal in the evolution of chamber music forms such as the string quartet and piano trio. His contributions to musical form
Sonata form
…elements sits uneasily between two historical eras. Although the late 18th century witnessed the most exemplary achievements in the form, above all from Joseph Haydn and Wolfgang Amadeus Mozart, a compositional theory of the time did not use the term "sonata form". Perhaps the most extensive contemporary description…
St. Stephen's Cathedral. In the foreground is the Kapellhaus (demolished 1804), where Haydn lived as a chorister.
Morzin Palace, Dolní Lukavice, Czech Republic
Haydn's wife. Unauthenticated miniature attributed to Ludwig Guttenbrunn