Brass instrument the player of a brass instrument has direct control of the prime vibrator (the lips), brass instruments exploit the player's ability to select the harmonic at which the instrument's column of air vibrates. By making the instrument about twice as long as the equivalent woodwind instrument and starting with the second harmonic, players can get a good range of notes simply by varying the tension of their lips (see embouchure). Most brass instruments are fitted with a removable mouthpiece. Different shapes, sizes and styles of mouthpiece may be used to suit different embouchures, or to more easily produce certain tonal
Bit mouthpiece when used this way the bit is relatively mild. This latter method is only possible because bit keepers ensure the bit stays in a fixed position in the horse's mouth, and thus bits that do not use bit keepers (e.g., a D-ring or eggbutt) do not have this milder option. This bit can put pressure on the tongue, although it also adds pressure to the bars and lips of the mouth. It contains a double jointed mouthpiece similar to the French link, with the center section a flat plate. In its original form, the plate was intended to lie across