The Mongolian folk song "Farewell Song" is mainly popular in Ordos area, and now it has been often used as a Mongolian folk wedding etiquette song. When the bride is about to leave, relatives and friends will sing this song to express their memory and blessing to the bride. The whole song is full of sadness and yearning.

The scale mode of Song of Farewell belongs to the feather mode in the traditional pentatonic mode system in China. ? The mode ratio is 6 12356. In the pentatonic system, the feather mode is closer to the minor mode in the European large and small mode system. Feathering mode crosses with palace, business, horn and sound-seeking mode, with dim color, which is often used to express sadness, melancholy and other emotions.