The sound of clarinet is the best vibration point to support the whistle. We need to raise our heads and keep the clarinet at an angle of 35 degrees to the body. The feeling of the mouth is English O, Don't bite, it does n' t matter, keep the mouth shape unchanged, blow out the E of the lowest area of the clarinet and the G. of the highest area with the same mouth shape Remember: not with the mouth but with the air. The tightness of the mouth will directly affect the unity of pitch and timbre. The best oral practice method is to use English 0 feeling to practice. Flute head: each person's mouth shape, the thin thickness of the lips, the length of the tongue and the shape and size of the mouth are different, so the content of more and less and the best vibration point are different, because of different types of flutes and whistles. Because the clarinet pronunciation device is the flute and the whistle, then, how can we find the best vibration point, blow the flute from less, then blow a little bit more inward, then blow in the opposite direction after the uncontrollable point. So that you can find the point of your most satisfied sound, which is your best vibration point. Then find the tight point of the mouth, start blowing with a very tight mouth, to the point where the sound can not be blown, and then blow in the opposite direction. Among these points, find out the most relaxed point of sound. Generally speaking, in the case of maintaining the correct mouth shape, the lower mouth contains a lot of soft sound to help; in the case of control, the flute contains a lot of sound generous help.