Abbreviation of 奏鳴曲 (ソナタ). Used in musical contexts, especially in classical music terminology. The full form 奏鳴曲 is more common in modern usage.
This sonata is a work by Beethoven.
奏曲 is sometimes used as an abbreviation for 奏鳴曲 (sonata).
concerto
string quartet (piece)
Abbreviation of 奏鳴曲 (そうめいきょく), itself a compound of 奏 (play music) and 鳴 (sound) and 曲 (piece).