The theme of our scripture reading is that there is a time for every thing, and that God has made everything beautiful in its time. Harmony is the combination of parts into a pleasing or orderly whole. The difference between classical art and modern art is harmony. The difference between classical music and rock music is harmony. Classical music has harmony, not only of sound, but also of volume and of beat.
Most modern music lacks harmony.
There may be some harmony of sound, but not of volume and of beat. Much modern music is violent in its composition. This is partly due to the fact that 99 percent of music today is African, even if it is called rock music or if it is called country-western music. When Moses and Joshua descended from the mount, they discovered that the children of Israel, who had interbred with the Africans of Egypt, had fallen into the African culture. And when Joshua heard the noise of the people as they shouted, he said unto Moses, There is a noise of war in the camp.