Watazumi Doso

 Roshi (November 20, 1911 - December 14, 1992) was a master of the end-blown Japanese bamboo flute. He studied Rinzai Zen, attaining the title of roshi.
Born as Tanaka Masaru, he was also known as Tanaka Fumon, Iccho Fumon, Watazumi Fumon, and Watazumi Shuso.
Watazumi played unlacquered instruments that he referred to as hocchiku, in contrast with the modern shakuhachi, stressing that to truly understand nature and oneself, one had to use an instrument of the most raw and natural origin. From this grew what he called Watazumido (or "Way of Watazumi").
In addition to hocchiku, Watazumi used the Jo stick for exercise, invigoration, and training.