Sonata, from the Italian word meaning “to sound,” is the name for an instrumental genre that usually has several movements and is either performed by a soloist or by a chamber ensemble. If multiple instruments are used, one is often a keyboard instrument. Sonata is also a common name for the form that became the underpinning of that genre’s first movement’s organization, sometimes referred to as “sonata form” or “first-movement form.”

The genre is noted from the 1200's, and its early uses include mystery plays and Elizabethan plays, as well as in fanfares. The sonata, for instruments, was contrasted to the cantata, for voices.

During the Baroque period, two common types of sonata gained prominence. The sonata da camera, a “chamber sonata,” usually a work of three to four movements, was scored for one or several melodic instruments and continuo. Many of these compositions were designed as dance music, and they were popular in Austria and Germany, as well as in Italy, where Arcangelo Corelli’s sonatas for violin and harpsichord were noted.

The other Baroque era sonata, the sonata da chiesa, or “church sonata," popularly in four movements became common during Mass and Vespers. Corelli also wrote sonatas of this type. In the eighteenth century, the sonata da chiesa and the sonata da camera were generally replaced as movements in larger works and acquired other names when applied to dance music.

In the eighteenth and early nineteenth century, the sonata form of the first movement became important. The tendency became for sonatas to be written as a three-movement work for piano or piano and violin, with a first movement in sonata form. Josef Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven are all known for their sonatas.

The sonata form, which was being used by the Classical age, had many variations, but can generally be characterized as having three sections. Beginning with an exposition, in which two contrasting themes are introduced, it moves on to a development section aimed at extending that material, and closes with a recapitulation, in which the expositional material is heard again.

Famous sonatas include:

• Kreutzer Sonata — Violin Sonata No. 9 in A Major by Ludwig van Beethoven
• Moonlight Sonata — Piano Sonata Op. 27 No. 2 by Ludwig van Beethoven
• Sonata facile — Piano Sonata No. 16 in C Major, K. 545 by Wolfgang Amadeus Mozart
• Piano Sonata No. 11 in A Major, K. 331, by Wolfgang Amadeus Mozart

Other well-known sonatas include Domenico Scarlatti’s harpsichord sonatas, Johann Sebastian Bach’s sonatas and partitas for solo violin and for flute and continuo, and works by Johannes Brahms, Frédéric Chopin, Franz Liszt, Felix Mendelssohn, Sergei Prokofiev, Sergei Rachmaninoff, Alexander Scriabin, and Dmitri Shostakovich.