What are the three categories of The Book of Songs?

The Book of Songs is divided into three parts: style, elegance and ode.

The Book of Songs is the beginning of China's ancient poetry. It is the earliest poem, including ***3 1 1 poems from the early years of the Western Zhou Dynasty to the middle of the Spring and Autumn Period. "Wind" is a ballad of Zhou Dynasty. Elegant music is the official music of Zhou people, which is divided into harmony and elegance. Ode is a music song used for sacrificial rites in Zhou and aristocratic ancestral temples, which is divided into, and Shang songs.