When a person is angry with another person, that person is removed from their heart. That's why the physical reaction is to shout. The greater the distance, the louder the shouting. But when individuals are in love, they speak softly, and when they are further in love, no words are needed.
The entire world is a musical instrument, the pole of the world celestial is intersected where this heavenly chord is divided by the spiritual sun. Earthly music is an echo of this cosmic harmony: it is a relic of heaven.