incidental music

uncountable

(music) Music that is played as a background to a film, television programme, video game, etc.

Japanese Meaning

映画、テレビ番組、ビデオゲームなどの視覚メディアにおいて、シーンを引き立てるために流される背景的・補助的な音楽

The director chose subtle incidental music to enhance the emotional depth of the scene.

監督は、場面の感情的な深みを高めるために、さりげない劇伴を選んだ。

Sense（1）

(music) Music that is played as a background to a film, television programme, video game, etc.

The incidental music helped give the programme its evocative atmosphere.