"A bamboo cane, closed on one side by a nodium, is provided with five round finger holes lying in one plane. The side wall of the nodium is cut at an angle and a rectangular hole with a sharp blowing edge is broken into the cut surface. A rattan ring is slid over the blowing end, which is held in place by another rattan strip attached to the flute. There is an air channel between the flute wall and the rattan strips, which directs the air flow towards the blowing edge.