Who is Masterharper Robinton from Dragondrums and what is their importance?

Masterharper of Pern, Robinton, takes Piemur under his wing after the fourteen-year-old, loses his soprano voice. Robinton is described as kind but stern. He also has a pet lizard that he loves. Under Robinton's tutelage, Piemur's apprenticeship will prepare him to one day become the Masterharper.