One Note Bamboo Flute Hocketing (Francis Bebey)

Listening to his hocketing on a "one note bamboo flute". It's a musical technique apparently the Pygmies use. Anything played in this technique has a recurrent nature centered around the note of the bamboo flute. It doesn't need to be the root note though that the bamboo flute plays -- clearly, he's playing the bamboo flute as a fifth.,