Oak Pennywhistle In D Classic Pennywhistle in D One of the premier pennywhistles in the world, created from premium triple-nickle plated solid brass tubing polished to a lustrous shine and capped with the unique Oak adjustable turnable mouthpiece Ideal for playing traditional folk and Irish music, the Oak Pennywhistle is among the easiest of all the instruments for beginners to play One of the premier pennywhistles in the world, created from premium triple-nickle plated solid brass tubing polished to a lustrous shine and capped with the unique Oak adjustable turnable mouthpiece Ideal for playing traditional folk and Irish music, the Oak Pennywhistle is among the easiest of all the instruments for beginners to play