Long tune is a free translation of Mongolian language "Wuri Tingduo". Uridine means "everlasting" and "eternal", and "many" means "Song". According to the historical origin of Mongolian music culture and the present situation of music forms, long tune can be defined as a kind of folk song created by nomadic people in northern grassland in animal husbandry production and labor, and sung in wild grazing and traditional festivals.

The theme of long-tune folk songs is closely related to Mongolian social life. It is a must-sing song in all Mongolian festivals, wedding banquets, gatherings of relatives and friends, Nadam and other activities. Representative tracks include "Walking Horse", "Little Huang Ma", "Vast Grassland" and "Vast and Rich Alashan". The long melody is long and soothing. The artistic conception is broad, the sound is more than words, the breath is long, and the melody is very decorative (such as forward tilt, backward tilt, glide, echo, etc.). ), especially "nug"

Laa) "(Mongolian transliteration, inflection or decorative sound) has the most distinctive singing style.

The long tune embodies the characteristics of Mongolian nomadic culture. It is closely related to Mongolian language, literature, history, religion, psychology, world outlook, ecological outlook, outlook on life and customs, and runs through all the history and social life of the Mongolian nation. The study of long-tune folk songs involves many branches of musicology, and the research and protection of it is actually the most powerful inheritance and protection of grassland civilization and grassland cultural types with a long history.

In 2005, "Mongolian long-tune folk songs" jointly declared by China and Mongolia were selected into the third batch of UNESCO representative lists of human oral and intangible heritage. In 2006, it was selected into the first batch of national intangible cultural heritage list.