Try music therapy, the five elements of music heal well! Five tones are also called five tones. The oldest scales used only five tones, namely Gong, Shang, Jiao, Qian and Yu. The word "five tones" first appeared in Li Zhou Guan Chun: "All words are written in five tones, and the palace merchants seek feathers." "Five tones" first appeared in Mencius Li Lou: "Without six laws, five tones cannot be correct." The ancients usually used "gong" as the first sound of the scale. ...