What are the musical characteristics of folk songs?

Ethnicity of folk songs of different ethnic groups, each other distinctly show different ethnic characteristics, which is mainly manifested in the folk songs of different ethnic groups have different singing language, tune beats, melody, song style, scale and modulation, weaving and so on have produced a national personality. For example, the Korean folk songs, on the one hand, it uses the Korean language to sing, the music that has a unique Korean language tone flavor; on the other hand, it focuses on maintaining some of the inherent characteristics of the traditional music of the ethnic group, such as more 6/8, 9/8, 12/8, 3/4 and other beats; staff drums and other percussion instruments, "long and short" rhythmic pattern in the tune The music is more lyrical and has a dance style.