Trumcor Lyric Stealth Trumpet Practice Mute Fiber and Wood Construction They create a muted tone that is vibrant, warm and responsive These mutes are durable, and the wide selection of sizes ensures a proper fit and excellent intonation TrumCor mutes produce a beautiful sound, and at the same time preserve the pure timbre of the trumpet in all registers and dynamicsLyric StealthThis practice mute is unique in that it responds evenly in all registers without compression or intonation distortion It is designed for warming up or long periods of quiet practicing