String dance music refers to the instrumental music played by Killer when the dancer dances string dance. It is mainly popular among Yi, Nu, Lisu and other ethnic groups in Yunnan Province. "Killer" is a general term. The Yi people's four-stringed and three-stringed instruments, Nu pipa, Lisu pipa and three-stringed instruments can sometimes be called "Killer". These instruments are both dance tools and musical instruments in related dances, so their dances can be collectively called "string dance" and their pleasures can be collectively called "string dance music".