Practice the flute precautions  When playing the flute, first suck the air all over your chest, hold it for seconds, then slowly blow out, while sounding "ha.. ha........".In the "ha" sound, the abdominal chest will pressure a lot of airflow out, but pay attention to keep the airflow keeps blowing outward, can not be interrupted.The "ha" sound is just a pulse, requiring repeated practice.Start slower, and then speed up.This slowly little by little practice, while blowing in the heart while thinking about ha.Be sure to use your abs to control them and practice them rhythmically.After a week or two weeks of practice, the trebrato blows naturally.When playing specifically, combine your feelings and the trebrato together, so that the connotation and emotional expression of the music are fully displayed incisively and vividly.The effect of blowing the trebrato should be as smooth as waves, without edges and corners."Ha" sound itself is very soft, when playing a long sound, 1 with soft "spit" to start, first light and then sound —— -gradually stronger.2 Play the straight sound first and then the trebrato, to express the emotion of the music is better.The flute has a wide and high range, flexible skills, soft, quiet, that is, can play bright and cheerful melody, and can play melancholy melody, is the most flexible one of wooden pipe instruments.