What is the earliest recorded collection of folk songs in China?

The Book of Songs is the earliest collection of poems, about 2000 years ago. It collected 305 poems from the early years of the Western Zhou Dynasty to about 500 years before and after the Spring and Autumn Period.

According to the musical nature, the works in The Book of Songs can be divided into three categories: wind, elegance and ode. Feng belongs to local music, which was the music songs of various vassal States at that time, mostly folk songs. Tooth is the music of the Western Zhou Dynasty, which is divided into tooth and two parts.