Modern didgeridoo designs mouthpiece with a concave face that is close to double the diameter of a regular didgeridoo mouthpiece. This mouthpiece gives a player more room to control the vibration of their lips at frequencies below the traditional drone. The technique is similar to playing pedal tones on a brass instrument. The desired tone is different then brass, and there for the embouchure used to play it is different than brass technique. The most prominent playable note on these instruments is always one octave below the fundamental didgeridoo drone. Several other drone-notes can be played below the fundamental as well, and these
Bit mouthpiece have a straight bar mouthpiece, but with the addition of a port, spoon, or other accoutrements, and thus are not truly classified as a mullen or straight bar mouthpiece." Types of Bits: All types, including driving bits. What it is: The middle of the mouthpiece has a "port," or curve, which may vary in size from "low" to "high." The port is different from the mullen mouth in that the curved portion does not extend the width of the mouthpiece, but is only an inch or two in the center of the bar. Action: Ported bits act on the lips,