"subtle music" is correct and usable in written English.
You can use it to describe music that is not loud or obvious. For example: "The restaurant played subtle music in the background, creating a calming atmosphere."
When does the complex, diverse, subtle music reach the masses?
Music becomes a bond between them ("a vast, sweeping, subtle music echoed through the house").
And somber, subtle music (composed and performed by Daniel and Matthew Pencer) feels as pervasive as air.
At times, his subtle music was overwhelmed by his urge to be a showman, and his performance grew aimless.
The subtle music is by Arthur Honegger, and the co-cinematographer is Jules Kruger, whose credits include Gance's Napoléon.
He enjoys himself deconstructing the word "chilled", a "pocket fluff" definition that's indiscriminately applied to any sort of restrained and subtle music, including his own.
And this year I've been looking at, and even snapping up a few items for the ever so subtle music-loving, guitar--and-keyboard-playing cyclist that I am.
To hear the subtler music of the city, though, you have to teach yourself to listen.
Powers achieves a subtler music, but, for all its fascination, it tends to fade as the pages are turned.
Bossa nova, a subtle, rustling music with jazz harmony, chamber-music dynamics, samba rhythm and close-miked emphasis on voice and guitar, began when the Brazilian recording industry, and the Brazilian economy, was at a high.
Jack Wyllie plays sax with the Portico Quartet, a chamber bop instrumental group whose subtle, upright music grazes the edge of jazz, but is more a sort of post-indie light music lacking a specific genre box, but it could easily fit into whatever compartment Four Tet are sometimes placed in.
