付ふ随ずい音おん楽がく

noun

incidental music

Music that accompanies a play, film, or other performance, often serving as background or atmospheric music.

• この劇げきの付ふ随ずい音おん楽がくは、有ゆう名めいな作さっ曲きょく家かが手てがけた。

  The incidental music for this play was composed by a famous composer.