How does Sam create music in the wilderness?

Sam has shown himself remarkably adept at surviving all by himself in the Catskill Mountains. He can do all sorts of things: hunt, fish, build a tent out of evergreen hemlock branches, and even identify wild onions. He struggles to build himself a fire, but on the whole he's still a pretty resourceful young man.
When the unusual figure of Bando arrives on the scene, Sam starts to learn even more about how to survive in the wilderness. Bando helps Sam make a raft, which they then use to drift downstream to catch fish. He also gives the young man a useful lesson in how to make jam out of sugar. But man does not live on bread alone, as they say—nor jam, for that matter—and even up in the mountains it's important not to neglect the higher things of life such as music. Thankfully, Bando is on hand to teach Sam how to make his very own musical instrument: a little wooden whistle hewn from a willow branch. From such an unlikely source Sam is able to make sweet music in the wilderness.