Jo-Ral Brass Bottom Trumpet Straight MutePiercing and bright, the sound of a straight mute is unmistakable. It's perhaps the most widely used because of its ability to complement a host of musical styles, delivering an exciting tonal quality with near perfect intonation. Lightweight and easy to use, Jo Ral straight mutes are a favorite of trumpet players at every level and in any discipline, from classic jazz players to symphonic musicians.