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Vibrato is change in pitch, and slightly in volume, and even more slightly in tone. As a technique, it's one of the most difficult skills to teach and learn. Here are the three important elements to producing this technique. Item 1 we've already discussed; we'll discuss items 2 and 3 over this week.

1) Throat tremolo is on

2) Mouth is tuned to the note you're playing

3) Tongue and pharynx are relaxed enough to be influenced by the throat tremolo