The air-playing skills of xun include long tone, gas tremolo, labial vibrato, etc. Among them, long tone is the foundation of xun playing skills, which must be full and round, loud and stable without noise. The common techniques of xun can be divided into three categories: qi, finger, and tongue: including long sound, gas tremolo, finger tremolo, labial tremolo, tremolo, glissando, slur, hit, empty hit, loop change Qi, double spit circulatory ventilation, virtual blowing and so on. These skills are essential when playing xun.
In Xun playing skills, long tone is the foundation of Xun breathing training. By practicing long tone, you can master the correct breathing method, develop a good mouth shape and a smooth, full and pure pronunciation. Therefore, it must be practiced for a certain period of time every day. When practicing, it can be carried out in combination with strength. The tone must be full and round, loud and stable without noise.
Gas tremolo, also known as "abdominal tremor", is produced by the vibration of airflow caused by abdominal contraction force. There are big, small, fast and slow air tremors, which should be determined according to the needs of the music content in the actual performance. For example, the melody of singing should use a uniform and free air vibration sound, and the melody of passion and grief should use an exaggerated air vibration sound. Gas tremolo can be used flexibly on the premise of ensuring pitch, and requires uniformity and smoothness.
Labial tremolo is a special wave sound produced by driving the xun body with both hands to move the damper and blowing hole back and forth rapidly. When the xun body is moved backward, the blowing hole becomes smaller and the sound is lower; when the xun body is moved forward, the blowing hole becomes larger and the sound is higher. This playing technique is often used to express magical and ethereal moods.