Polyphony, such as do. Duo Duo Duo must finally land on do, and beat per minute will count on it. If it is a whole note, it is four beats, and so on. Tremolo pays attention to speed, the sooner the better, but it must be clear and not too heavy.

A decorative sound formed by the rapid and uniform alternation of the tonic and its adjacent sounds. The vibrato is marked with the symbol tr ~ ~ ~ ~, and if it is played for a long time, it is marked with the symbol TR or tr ~ ~ ~ ~ ~ ~ ~. The pronunciation symbol above the vibrato symbol indicates that the adjacent notes above are pronunciation symbols.

General vibrato, without special marks, refers to the beginning of the main note and the end of the main note. But sometimes it starts with other sounds. In order to express the author's intention better and more accurately, it is best to mark the beginning and end sounds with small notes.

The extended data is alternately and repeatedly played with a tonic and a tone half a degree higher than the tonic at an extremely fast speed within the duration of the note, resulting in a vibrato effect. The sign of vibrato is "tr" or "tr~~". According to the different ways of playing, it can be divided into the following three types:

(1) Play the vibrato for the duration with Legato.

(2) Pop up the tonic, and play the tone above the tonic with Legato.

(3) Hold two notes on two different strings with your left hand, and then pop them up with two or three fingers of your right hand.

You can do skipping alone: break up and play DO-SO-DO, 1-5 refers to single-tone and single-finger bouncing sound.