From the YouTube page:
Listen for Life ( http://www.listenforlife.org ) presents: Indian village 4 — bamboo singing.
The “raut” are a societal group of cowherders, and their special style of singing is very old. It’s called “bans geet” or “bamboo singing,” because it is accompanied by musicians who use the “shehnai” or double-reed bamboo flute. In fact, the raut people just call the instrument the “bamboo.” And the singing itself is a prayer to ancestors for good fortune. This is another of the videos shot in the remote village of Matiya, India.