Mouthpiece (brass) Mouthpiece (brass) On brass instruments the mouthpiece is the part of the instrument placed on the player's lips. The mouthpiece is a simple circular opening that leads, via a semi-spherical or conical cavity, to the main body of the instrument. Mouthpieces vary to suit the tone of the instrument. Lower instruments also have larger mouthpieces, to maximize resonance (see pitch of brass instruments). Also, mouthpieces are selected to suit the embouchure of the player, to produce a certain timbre, or to optimize the instrument for certain playing styles. For example, trumpet and trombone mouthpieces are usually semi-spherical whereas French horn
Mouthpiece (woodwind) reflect the theory that the mass of metal over the shank of the mouthpiece, which contacts the neck cork, stabilizes the connection and enhances the integrity of the harmonic series. On a capped double-reed instrument the function of the mouthpiece is simply to provide a chamber within which the reed can vibrate, with a hole through which air can be blown. On a fipple flute the mouthpiece, or fipple, provides a shaped passageway for air to be blown against an edge, producing turbulent flow which excites the resonant vibrational modes of the air column. A pirouette is a wooden mouthpiece