The tin whistle, or pennywhistle as it is also sometimes called, a small end-blown flute normally made of tin, brass, or some other metal, with six holes in a diatonic (major) scale. Some are made of wood or plastic instead of metal. The tin whistle has a range of two octaves or more, and is available in a number of keys. Until recently, it was made of rolled tin with a wooden fipple in one end forming a windway. Though these are still available, most players today use the modern whistle which incorporates a plastic mouthpiece.