Harmony is the pleasing arrangement of combined, simultaneous musical notes structured according to the composition and progression of chords. With harmony, superposition of sounds are orchestrated into congruent parts. Harmony is the playing together of interacting different notes, delivering rich and colorful music.
As I remember from history, the Romans admired the human body. They loved the way the body was shaped and just how it was. That is possibly why they took detail into the human sculptures.