Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Sound Devices (hierarchy name)
5. sound devices (equipment)
6. [sound devices by acoustical characteristics]
7. aerophones
8. flutes (aerophones)
9. duct flutes

Anotations

Scope note:

Bamboo duct flutes of Indonesia, open at the bottom and closed with a natural node at the top; a notch is cut in the node and in the tube just below it, and a narrow bamboo ring is tied over the upper end to guide the player's breath.