Key of Made in England by Kerry Whistles. It is part of the Tenor range that include D, E and Eb.
Optima Tenor D Tuneable Whistle by Kerry Whistles
Chieftan Optima Tenor Low D Tuneable Whistle - Kerry Whistles
Optima Mezzo Bb Tuneable Whistle by Kerry Whistles
Optima Alto F Tuneable Whistle by Kerry Whistles
Optima Mezzo B Tuneable Whistle by Kerry Whistles
Optima Alto G Tuneable Whistle by Kerry Whistles
