Constant music interferes.

Not symbolically.
Physically.

Sound is processed.
Patterns are tracked.
Energy is spent.

Even when you think you are not listening,
something is busy.

Stop the sound.
That activity stops.

Reading lasts longer.
Doing continues without breaks.

Not because of silence,
but because one drain is gone.

That's it.

No rule follows.
No recommendation.

Just interference removed.