Vibrato produces warmth and character in order to express desired moods in music, notes and phrases. This video will teach you the mechanics of a good vibrato regardless of whether it is an arm, wrist, or finger vibrato. See how the fingers are pulled back smoothly when using the correct movements and angles. Practice doing this slowly until you feel that it feels natural. When you have captured the feeling of this vibrato it is time to speed it up a little.