The sound of clarinet depends on what we blow when we play clarinet, depending on your preparation when you inhale; the more prepared, the better the sound quality. The most basic idea of this way is to emphasize the elasticity of the body and use the elasticity of the body to store the energy of playing. So as long as your body elasticity is better, you can play longer music. What we have to practice when playing musical instruments is the mastery of sound quality, which represents your ability to control musical instruments, and while we play musical instruments, we have to make a healthy musical instrument resonance. That is, vocal music often emphasizes the healthy vocal method. And timbre is like a layer of fine powder spread on the sound quality, so good sound must be good sound quality. To judge whether your play is correct, it should be to hear the feeling of your voice in the distance, not the wonderful echo heard in the small room.