 There's the jaggers and that's the wrappers. So we were talking violins earlier with higher or lower and how they are comprised of over 70 different pieces of wood. And some more violin fun facts for you. The modern violin, it's been around for roughly 500 years. It was designed in the 1500s. And the most expensive violin, valued at $18 million. And playing the violin burns approximately 170 calories per hour.