The Denis Wick Trumpet harmon mute with extending tube is a fantastic way to alter the sound and colour of a trumpet. Recommended by all kinds of top brass players, the Denis Wick harmon (or wah-wah) mute range has become an increasingly popular accessory for musicians. Manufactured using traditional hand spinning techniques, absolute precision is guaranteed. The extending and separable tube offers a multitude of different sounds and timbres. This mute is suitable for both trumpets and cornets.