Make your Tenor Trombone practice a breeze with the Denis Wick Tenor Trombone Practice Mute. Not only does it allow you to practice 'in tune' painlessly, it is essential for the development of young players, and also works as a 'hotel mute' for professionals. The Denis Wick Practice Mute allows Tenor Trombone players to improve their tone quality by forcing them to better utilise their air.