Editing Sonata form (section)

==History==
{{Main article|History of sonata form}}

The term ''sonata'' is first found in the 17th century, when instrumental music had just begun to become increasingly separated from vocal music. The original meaning of the term (derived from the Italian word ''suonare'', to sound on instrument) referred to a piece for playing, distinguished from ''[[cantata]]'', a piece for singing. At this time, the term implies a binary form, usually AABB with some aspects of three part forms. Early examples of simple pre-Classical sonata forms include [[Giovanni Battista Pergolesi|Pergolesi]]'s Trio Sonata No. 3 in G major.<ref name="White, John D. 1976"/>{{rp|57}}

The Classical era established the norms of structuring first movements and the standard layouts of multi-movement works. There was a period of a wide variety of layouts and formal structures within first movements that gradually became expected norms of composition. The practice of Haydn and Mozart, as well as other notable composers, became increasingly influential on a generation that sought to exploit the possibilities offered by the forms that Haydn and Mozart had established in their works. In time, theory on the layout of the first movement became more and more focused on understanding the practice of Haydn, Mozart and, later, Beethoven. Their works were studied, patterns and exceptions to those patterns identified, and the boundaries of acceptable or usual practice set by the understanding of their works. The sonata form as it is described is strongly identified with the norms of the [[Classical music era|Classical period]] in music. Even before it had been described, the form had become central to music making, absorbing or altering other formal schemas for works. Examples include Beethoven's [[Piano Sonata No. 23 (Beethoven)|''Appassionata'' sonata]].<ref name="White, John D. 1976"/>{{rp|59}}

The [[Romantic music|Romantic era]] in music was to accept the centrality of this practice, codify the form explicitly and make instrumental music in this form central to concert and chamber composition and practice, in particular for works that were meant to be regarded as "serious" works of music. Various controversies in the 19th century would center on exactly what the implications of "development" and sonata practice actually meant, and what the role of the Classical masters was in music. It is ironic that, at the same time that the form was being codified (by the likes of [[Carl Czerny|Czerny]] and so forth), composers of the day were writing works that flagrantly violated some of the principles of the codified form.

It has continued to be influential through the subsequent history of classical music through to the modern period. The 20th century brought a wealth of scholarship that sought to found the theory of the sonata form on basic tonal laws. The 20th century would see a continued expansion of acceptable practice, leading to the formulation of ideas by which there existed a "sonata principle" or "sonata idea" that unified works of the type, even if they did not explicitly meet the demands of the normative description.