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 making them "extremely" severe to the point where it is easy for any rider to cut and ruin the horse's mouth, especially the lips. Many horsemen, even the most skilled riders, will not put such a harsh bit in their horse's mouths. Many equestrian organizations do not allow a bit to be 1/4 inch or thinner in diameter. If the rider gives crude aids, it is generally best to pick a bit mouthpiece that is thicker. This may also be true with some horses with relatively thin bars. Bit mouthpiece The mouthpiece is the part of a horse's bit that