Okura+Mute Practice Mute for French Horn & Bass TromboneThe Okura+Mute Practice Mute is designed by professional trumpeter, Toshio Okuda in Kumamoto, Japan. This Model fits both French Horn and Bass Trombone bells. These mutes are made of sturdy, yet lightweight plastic and are designed to change the way you think about the practice mute. Instead of just making the volume softer, this mute can be an aid to your everyday practice routine. Model 2018. "Many brass players have talked about practicing with a