Tin whistle topic

The low whistle, or concert whistle, is a variation of the traditional tin whistle/pennywhistle, distinguished by its lower pitch and larger size. It is most closely associated with the performances of modern Irish musicians and groups such as Riverdance and Davy Spillane, and is increasingly accepted as a feature of Irish traditional music. A whistle is generally classed as a low whistle if it is pitched in a key lower than the A below middle C. Whistles higher than this are termed "soprano"... full article at wikipedia