Vibrato

Vibrato is an expressive tool, which may be controlled at will by the player. For a particular effect, a composer may specify the amount of vibrato to be used. A vibrato-less sound is difficult to control, as pitch may become less stable, but it can be used to great effect by the composer in the right circumstances. The depth and speed of the vibrato alters the timbre of the sound and the expressive qualities within it. Unless particularly specified by the composer, the player will choose a level of vibrato deemed appropriate for the music they are playing.

Long note (G) played with slow to fast vibrato