Denis Wick tenor trombone aluminum practice mute

"Denis Wick practice mutes are perhaps the best teaching aids ever invented. Not only do they fulfil the need for the IN TUNE painless practice,so essential in the developement of every young player and an indispensible 'hotel mute' for professional, but they also make possible an enormous improvement in tone quality using the entire vital capacity as a vibrating air column by opening the throat spaces thorough playing loudly ing the low register."-Denis Wick