Origins
The word 'sonata' is one of the foundational terms in the vocabulary of Western instrumental music. It entered English in the 1690s from Italian, where 'sonata' is the feminine past participle of 'sonare' (to sound, to play), meaning literally 'a sounded thing' — that is, a piece performed on instruments rather than sung. The Italian verb 'sonare' (modern spelling 'suonare') descends from Latin 'sonāre' (to make a sound, to resound), from the noun 'sonus' (sound), which traces to Proto-Indo-European *swenh₂- (to sound, to resound).
The PIE root *swenh₂- had a wide distribution. In Latin it produced 'sonus' and its derivatives — 'sonāre,' 'sonōrus,' 'consonāre,' 'resonāre' — which gave English 'sonic,' 'sonorous,' 'consonant,' 'dissonant,' 'resonance,' and 'sonar.' Through a different line of descent, the same root may have produced the Germanic word for the singing bird: Old English 'swan' (from Proto-Germanic *swanaz), though this derivation is debated. The Old English verb 'swinnan' (to sing, to make music) is more securely connected.
The musical term 'sonata' emerged in late sixteenth-century Italy during a period of extraordinary innovation in instrumental music. For most of the medieval and Renaissance periods, Western art music was predominantly vocal, with instruments serving as accompaniment or doubling voice parts. As independent instrumental composition developed, Italian musicians needed terminology to distinguish purely instrumental works from vocal ones. The solution was elegant: 'sonata' for a piece that is sounded (played) and 'cantata' for a piece that is sung (from Latin 'cantāre,' the frequentative of 'canere,' to sing). A third term, 'toccata' (from Italian 'toccare,' to touch), designated a keyboard piece showcasing the player's touch.
Development
Among the earliest works bearing the title 'sonata' is Giovanni Gabrieli's 'Sonata pian' e forte' (1597), scored for two instrumental choirs and published in his 'Sacrae symphoniae.' In this period, 'sonata' was a loose designation — any instrumental piece might be called one. Through the seventeenth century, the term gradually acquired more specific formal implications. The 'sonata da chiesa' (church sonata) typically featured four movements in a slow-fast-slow-fast pattern, while the 'sonata da camera' (chamber sonata) was a suite of dances.
The modern concept of sonata form — a specific structural principle based on the exposition, development, and recapitulation of contrasting themes — crystallized in the mid-eighteenth century and was codified by theorists in the nineteenth. Haydn, Mozart, and Beethoven established the three- or four-movement sonata as the primary vehicle for solo and duo instrumental music, and the term became inseparable from their formal innovations.
The Latin root 'sonus' was also the source of several other English musical and acoustic terms. 'Sonnet' arrived through Italian 'sonetto' (a little sound or song), itself a diminutive formed from Provençal 'sonet.' 'Sound' itself entered English through Old French 'son' from Latin 'sonus.' 'Sonar' is a twentieth-century acronym (SOund NAvigation and Ranging) that plays on the Latin root. The richness of this word family reflects the centrality of sound — and its Latin name — in European intellectual and artistic life.
Modern Usage
In contemporary usage, 'sonata' retains its primary musical meaning but occasionally appears in extended senses. Writers may speak of a 'sonata of colors' or a 'political sonata' to evoke ideas of structured contrast and development. These metaphorical uses draw on the word's association with formal elegance and thematic complexity rather than on its original, humbler meaning of 'a thing that is played.'