I'm so happy I found this video! I finally can see your hands up close. Congratulations Mitsuhirosan for the masterful handiwork that you do! - Jeremy Shafer (fellow handwhistler).
Mitsuhiro, your tone is beautiful and seeing your Hand Positions up close, I now understand how you so easily make all of your sounds. I see that you use hardly any air to make your tone. My technique is completely different and much more difficult to do and uses much more air that I pressurize with my diaphragm muscles as I fill the bottom part of my lungs. My expressive vibrato comes from there as well. I wish that I had learned your way! I wish that i could jump notes by lifting fingers. Best wishes to you and y our entire Family. Wishing you nothing but the very best that life can offer you!