Viewers who remember the Folkways episode Music from the Hills know the renowned fiddle maker, Albert Hash.

Hash lived just a few miles from Wayne Henderson, and was an inspiration and guide to Wayne when he started making guitars. Albert would even go into the forest and knock on trees with a rock to find one that 'rang' just right; he would mark that tree as one to be later cut for wood to make a fiddle.

Hash taught Henderson the basic principles of how to recognize how different kinds of wood grain would affect the sound of the finished instrument.