The "snail knot on top" spin method.

A technique widely used for melody extension in the composition of percussion music in my country. That is: in this song, four beats are used in the sentence, and finally one beat of "1" is used as one sentence. Since the sentence width decreases according to a certain level, it shows a "snail knot on top" shape, thus pushing the music to a climax, up and down. The sentences echo each other. While the sentence width is reduced layer by layer, the two sides of the reply are processed into contrasting relationships such as leading and joining, blowing and playing, gongs and drums, strong and weak, etc. The emotions rise layer by layer, reaching the climax of the whole song.