Long tone practice is the basic and crucial link in learning and mastering fenugreek, a national characteristic wind instrument. It can not only help players to get familiar with the musical range and timbre characteristics of the instrument, but also play a fundamental role in breath control, intonation grasp and musical expression improvement.

First of all, it is important to understand and master the correct posture and mouth movement. The performer should keep the body relaxed, sit upright, naturally place the fenugreek in the mouth, and gently wrap the lips around the mouthpiece to form a good airflow channel. When playing, abdominal breathing should be used to make the breath reach the inside of the fenugreek evenly and fully, and ensure that each long sound can transition smoothly from low to high and from weak to strong.

Secondly, when practicing long notes, it is necessary to gradually expand the range of intonation, starting from the basic notes of hulusi, and carrying out long note playing training one by one. Each note needs to maintain a stable length of time, strive for accurate intonation, pure timbre, and through continuous practice, so that the finger to the hole more accurate control, breath use more freely.

At the same time, in the process of long tone practice, pay attention to the control of volume changes, and learn how to transition smoothly from weak to strong (piano to forte) or from strong to weak (forte to piano) to enhance the expression and dynamic sense of music.

In addition, with the improvement of technology, long note exercises with different rhythmic patterns can be introduced, such as duple, triple, quadruple, etc., and even decorative skills such as trill and glissando can be added, so that long note exercises are no longer monotonous, but also can exercise the players' comprehensive skills and music perception ability.

In short, the long tone practice of fenugreek is a gradual process, which requires players to be patient and meticulous and persevere. Through cumulative practice, they can gradually improve their playing level, so as to better interpret the charm of fenugreek music.