Using the 4th finger Fiddle lessons and workshops Here are a few things to know and work on if pinky vibrato is hard for you: , 1The pinky structurally is like a counterbalance to the thumb. They are connected at the base of the hand through Technique: Viola vibrato, and how flexible joints and a keen ear can enhance your expressive range Focus The Strad Vibrato on fourth finger: normal at start or weakness?