Instrument and related notation and methods

A closed end woodwind instrument comprising:

• a body defining an internal cavity;
• a windway defined by the body connecting the cavity to a mouthpiece area of the body and allowing an air to enter the cavity;
• a labium in communication with the windway, the labium splitting a quantity of air flowing through the windway such that a portion of the air flow enters the cavity, and a remainder of the air flow exits a window;
• a plurality of tone holes in communication with the internal cavity;
• wherein the internal cavity defines a circular cross section;
• wherein the body is approximately circular in cross section, and further consisting of four tone holes;
• a first tone hole in a northwest quadrant of the body, a second tone hole in a northeast quadrant of the body, a third tone hole in a southeast quadrant of the body, and a fourth tone hole in a southwest quadrant of the body;
• wherein the first tone hole has a diameter of approximately 6.00 mm+/−0.1 mm at an opening of the internal cavity, second tone hole has a diameter of approximately 5.50 mm +/−0.1 mm at an opening of the internal cavity, third tone hole has a diameter of approximately 1.5 mm+/−0.1 mm at an opening of the internal cavity, and wherein the fourth tone hole has a diameter of approximately 3.00 mm+/−0.1 mm at an opening of the internal cavity.