The phrase "background soundtrack" is correct and usable in written English.
It can be used to refer to the music or audio that plays in the background of a scene, film, or event.
Example: "The background soundtrack of the movie added an emotional depth to the scenes."
Alternatives: "ambient music" or "background music."
On the beach at Quiberon a pounding disco beat provided a background soundtrack for lunch.
At the Butler Houses, part of a complex of housing projects that loom over the neighborhood, police sirens provide a background soundtrack, and residents of all colors and nationalities caution against walking around at night.
At the Spotted Pig, a packed new hangout in the West Village where music is part of the restaurant's DNA, the background soundtrack actually inspires conversation rather than overpowering it.
The Star is basic and to the point: all utilitarian bare brick and wood fixtures, with almost nothing to distract you (bar a background soundtrack of vapid, Radio 2 indie schmaltz), from the business in hand: sensational beer.
It's pretty awesome: not only do you get real actors hamming it up (essentially, they sound like they're playing a game of cowboys and Indians), but you get a background soundtrack of clomping horse hooves.
Cat streams consist of felines curled up on laps, heavily purring into the mic, to a background soundtrack of owners saying "it's a HE", over and over after scopers write "She's so cute!!!!" x1000.
Weather is the natural background and soundtrack to our lives -- the accompaniment to our travel through the day.
In the background, the soundtrack was provided by a man named Kraig Moss, a very kind and gentle older man with a guitar and a terrible story to tell.
An Instagram-worthy film of nature playing in the background, and soundtrack that included Blur's Girls and Boys, Tame Impala's Elephant and Derrick May's Strings of Life all suited the fashion in a field mood.
The magazine commended the game's background music soundtrack but described its battle sequences as "a bit dull".
Sounds easy, but each letter is an unwieldy little bugger, flipping around in dizzying circles before landing on its wrong edge, turning a U into a C, or a T into the perpendicular symbol The game features a gentle, Chinese-restaurant-background-piano soundtrack that is soothing or maddening, depending on your mood, and on your mouse dexterity.
