The goal is not to make people notice the music
In most restaurants, good background music supports the experience quietly. It gives the room enough energy, protects conversation, and helps the space feel intentional. Bad background music can make the same room feel rushed, flat, generic, or uncomfortable.
The operating levers
The useful levers are brand fit, tempo, energy, volume, daypart logic, staff control, and refresh cadence. The restaurant should know what changes at lunch, what changes at dinner, and what staff are allowed to adjust.
Where a sound check helps
A sound check turns subjective complaints into a short diagnosis. Is the room problem music choice, volume, speaker placement, licensing path, or lack of owner-approved rules? Those are different fixes.