The tin whistle, also called the penny whistle, flageolet, English flageolet, Scottish penny whistle, tin flageolet, Irish whistle, Belfast Hornpipe, feadóg stáin (or simply feadóg) and Clarke London Flageolet is a simple, six-holed woodwind instrument. It is a type of fipple flute, putting it in the same class as the recorder, Native American flute, and other woodwind instruments that meet such criteria. A tin whistle player is called a whistler. The tin whistle is closely associated with Celtic and Australian folk music.
We normally refer to whistles as low whistles if there is one available an octave higher. The G is the highest pitch commonly sold, so from G downwards we call the big ones Low whistles.
The Low Whistle, so popular today as a result of the success Riverdance, was first made in the early 1970s by Bernard Overton, from aluminium tube. The instrument is usually tuned to D, an octave below the usual small D penny whistle, and twice as long (more or less the same size as a flute).