What is "tangmuri"

The tangmuri, ka tangmuri in the Khasi language, is a double-reed conical-bore wind-instrument used by the Hynniew Trep people of Meghalaya State in North-East India.
The tangmuri is used by musicians playing for traditional dances, and for other traditional rituals, such as cremations performed according to the indigenous religion, Niam Khasi. The tangmuri delivers a very high pitched sound when played by the musician.