Imagine music as a cell wall. Turn it up and the wall expands, growing the cell silencing much of the outside influences of others, unless they can comfortably enter the wall. People will either be uncomfortable inside the wall, like foreign bodies in an organism that doesn’t agree with them. If they are comfortable, they might enter, becoming an become an organ to the cell, feeling at home there, in agreement with their surroundings.
The louder the music, the denser and bigger the cell.