Sings and accompanies, plays and sings by himself, and also uses supporting accent. This is a distinctive feature of folk art music in terms of music accompaniment form: ① The central rappers of most folk art genres have one or two musical instruments to accompany themselves, either playing drums, bangles, or playing strings. For example, the rappers of the drum-type music type play the book drum and calligraphy board by themselves; the rappers of the tan-ci type music type play the sanxian or pipa by themselves; the rappers of the Taoqing type music type play the fishing drum and bamboo board; The rappers who play the dulcimer type play the dulcimer by themselves; the rappers who perform walking-singing types of music play with various props; the rappers who sing the ban-chan type of music play their own bangs, banban, and tablets. Any outstanding folk artist is an artist who is good at "singing", "speaking" and "playing". If there is other musical accompaniment, the rapper will also be the center to complement the tune. ② The selection of accompaniment instruments, except for the central rapper who also plays, the rest are mostly string instruments, such as sanxian, yueqin, pipa, zhuihu, erhu, dulcimer, etc. The accompaniment music is divided into two types: "Guoban music" and "Following tune music". Fill-in music includes prelude, introduction and fill-in. The preludes of certain types of music are relatively independent instrumental music, and are often called "opening songs" and "daily songs", such as the "Bantou Song" of the Henan major tune and the "Dabenqu" of the Bai nationality tune. These include "Putting Three Stages" and "Small Putting Three Stages". For folk art performances, the prelude has the functions of making noise, silence, practicing skills, setting the tone, and adjusting the voice; the introduction is the instrumental accompaniment guide before rapping, and is structurally a whole with the singing that follows; the introduction is the singing phrase or An instrumental accompaniment that serves as a connection and transition between sections. The transitions between sections are generally called "small transitions" and the transitions between sections are generally called "big transitions." Accompaniment music is the instrumental accompaniment that synchronizes with the singing. There are two main techniques: "accompaniment with the accompaniment" and "contrasting accompaniment". The accompanying accompaniment, that is, the instrumental accompaniment music is basically the same as the singing melody. It seems to be played in unison but has changes in simplified and traditional Chinese, which plays the role of moistening the tune; the contrasting accompaniment, that is, the instrumental accompaniment music and the singing melody form a contrast, and the two have different rhythm and melody progression. There are many differences, which can enrich the emotion of singing and enhance the expressiveness of singing.