The morin khuur (Mongolian: морин хуур), also known as the horsehead fiddle, is a traditional Mongolian bowed stringed instrument. It is one of the most important musical instruments of the Mongol people, and is considered a symbol of the Mongolian nation. The morin khuur is one of the Masterpieces of the Oral and Intangible Heritage of Humanity identified by UNESCO.It evolved from Xiqin, a stringed instrument in Tang and Song Dynasties, and circulated among the masses in the age of Genghis Khan (1155—1227). Morin Khuur is about one meter long, with a wooden body and two strings attached to its trapezoidal sound box. Its sound is mellow, low and mild, and the volume is relatively weak. The name of Morin Khuur is believed to be from a legend: once upon a time, in order to commemorate a dead horse, a shepherd made a two-string instrument, using the leg bone of the horse as the pillar, the head bone of the horse as the cylinder and the tail hair of the horse as the string, carving a horse head according to the appearance of the horse and mounting it on the top of the handle.