Why does Sheng tremble?

Sheng, a reed musical instrument originated in China, is the earliest musical instrument using free reed in the world. Can play harmony, breathe in, and the timbre is clear. 17 spring belongs to traditional sheng, and 36 spring belongs to improved 12 average rhythm sheng, which is easy to learn and difficult to go deep into.

Because Sheng is a musical instrument with "free spring coupled vibration pronunciation", the sound of Sheng will change due to the air environment at that time. Therefore, players should adjust the size of breath when playing, always pay attention to the sound from the "sound chimney" (or sound amplifying tube) on the Sheng Miao, and adjust the tilt angle and different placement heights of the Sheng, so as to obtain better sound quality and timbre.