Decorative notes are temporary notes used to decorate melodies, or notes with special marks, indicating that notes should be played in a decorative way, also known as Huayin. Decorative sounds are often used to enrich tunes and add features and effects to music.

Second, the duration of the decorative sound is calculated within the duration of the decorative sound or the previous sound. Decorative sounds are generally used to enrich tunes, add color to tunes, make music more distinctive and increase the effect.

Commonly used decorative sounds include leaning, vibrato, whispering, Boeing, sliding sound and so on. In the singing (performance) of China folk music, there are a lot of decorative sounds; In some periods of western music, decorative sound was once an important feature of melody style.

Third, the performance of decorative sound:

Although decorative sounds do not occupy the time of the beat in the score, they inevitably occupy the objective time when playing or singing, which raises a question: Where does the time of decorative sounds come from? Beginners of music, even players with certain playing experience, will have such doubts, because the difference between theory and reality makes people feel that some time has been "stolen", and the actual situation is indeed the case.