Sweetone D Tinwhistle with Pouch – Black The Sweetone Tinwhistle features Clarke's precision plastic mouthpiece. It is easy to play and produces a clear, crisp, clean, sound with good volume. It also takes very little air to produce a beautiful tone. Because of its excellent playability it is well suited for the serious musician and novice alike. The Sweetone Tinwhistle has a tapered bore. The tapered sides of the whistle have the effect of bringing the finger holes closer together and increasing the range and accuracy of the higher notes. A fingering chart, song sheet and suede cloth bag included with each whistle. The Sweetone Tinwhistle is available in the keys of C and D.