Shakuhachi flute music is a meditation for players and listeners alike. It is dance of sound and silence, of movement and stillness. Some people call it, ‘blowing Zen’. In this music, a rise and fall of notes gives way to space and stillness, which in turn give way to a rise and fall of notes. Eckhardt Tolle identifies shakuhachi flute music as a portal to the experience of consciousness being conscious of itself – and so a direct realization of what he calls the Deep I.
Bamboo flutes first came to Japan from China in the 7th century CE (1). The current shakuhachi was developed in Japan in the16th century. It is called fuke shakuhachi because of the instrument’s role in the Fuke sect of Japanese Zen Buddhism. Monks known as komusu (priests of nothingness, or emptiness monks) who used the shakuhachi as a spiritual tool. Their songs were paced according to the players’ breathing and were considered meditation as much as music.
Their spiritual practice required them to move from place to place playing the shakuhachi and begging for alms. The monks wore wicker baskets over their heads, as a symbol of their detachment from the world. But the world being the place that it is, it was more like a semi-detachment. Travel around Japan was restricted by the Shogunate at that time, and the Fuke only got their exemption by agreeing to spy for the authorities and allowing the Shogun to send out his own spies in the guise of Fuke monks. In response to these developments, several particularly difficult shakuhachi pieces became known as tests. If you could play them, you were a real Fuke. If you couldn’t, you were probably a spy and might very well be killed in unfriendly territory. With the Meiji Restoration, beginning in 1868, the Fuke sect was abolished along with the Shogunate itself, and shakuhachi playing was banned for a number of years.
The Wikipedia article on shakuhachi (1) provides information about the instrument and its capabilities, as well as its current international popularity and the formal link with Zen broken.. There is an International Shakuhachi Society which maintains a directory of notable professional, amateur and teaching shakuhachi players.
(1) https://en.wkipedia.org/wiki/Shakuhachi/ (NB This reference gets you to a page where you will need to type in Shakuhachi)