mood music

US /ˈmuːd ˌmjuː.zɪk/
UK /ˈmuːd ˌmjuː.zɪk/
"mood music" picture
1.

music intended to create a particular emotional atmosphere or mood, often used as background music in films, restaurants, or other settings

:
The restaurant played soft mood music to enhance the dining experience.
The film used dramatic mood music to build suspense.