noun
sonata form
A musical structure commonly used in the first movement of classical sonatas, symphonies, and concertos, typically consisting of exposition, development, and recapitulation.
ベートーベンの交響曲第5番の第一楽章はソナタ形式で書かれている。
The first movement of Beethoven's Fifth Symphony is written in sonata form.
ソナタ refers to the entire multi-movement work, while ソナタ形式 specifically denotes the structural form often used within a movement.
Compound of ソナタ (sonata, from Italian sonata) and 形式 (form).