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
Saxophone baritones have occasionally been made in the straight style. Most commonly, however, the alto and tenor saxophones incorporate a detachable, curved "neck" above the highest tone hole directing the mouthpiece to the player's mouth while the instrument is held in a playing stance. The baritone, bass, and contrabass saxophones accommodate the length of the bore with extra bows and right-angle bends between the main body and the mouthpiece. Although most saxophones are made from brass, they are categorized as woodwind instruments. This is because sound is produced by an oscillating wooden reed, not lips against a mouthpiece as in a