Shepherd's whistle
They are also produced commercially. Simple whistles may cost less than 1 USD in bulk; expensive ones may be quite ornate. They are commonly made of plastic, aluminum, stainless steel, silver, brass, titanium, Corian, jade, buffalo horn and other materials.
Music of Scotland
One of the oldest tin whistles still in existence is the Tusculum whistle, found with pottery dating to the 14th and 15th centuries; it is currently in the collection of the Museum of Scotland. Today the whistle is a very common instrument in recorded Scottish music. Although few well-known performers choose the tin whistle as their principal instrument, it is quite common for pipers, flute players, and other musicians to play the whistle as well.