Product Information [Yakusekien] Stone Flute/Rock Flute from Miyazaki Hisui Coast, Good Quality Himekawa Yakuseki, 115g ■Origin: Asahi Town, Shimoniikawa District, Toyama Prefecture, Hisui Coast ■Condition: Stone Flute Craft [Suigaku - Made by] ■Mineral Name: Himekawa Yakuseki (Official mineral name: Rhyolitic Tuff) ■Size: 60mm x 44mm x 32mm ■Blowhole Diameter: 10mm ■Weight: 115g The stone flutes offered by [Yakusekien] are all my own creations. I confirm that even beginners can produce sound relatively easily after the work is completed before listing them. You can enjoy various pitches and tones depending on the type of stone, the diameter, shape, and depth of the blowhole, and the strength of your breath. Of course, audible frequencies are present, but it also generates ultrasonic waves from 20,000 Hz to 22,500 Hz, producing a pure and clear tone that seems to ascend to the heavens. ■How to Play Place your lips near the blowhole of the stone flute and blow air in the same way you played with empty bottles as a child. You will definitely hear a "pee" sound when you blow at the right position. Based on that, change the position and angle of your lips, and the strength and direction of your breath to experiment with producing high notes, low notes, clear sounds, and raspy sounds. Through daily practice, you will be able to play various sounds. By continuing to practice repeatedly, your body will remember it unconsciously.