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. reeds (aerophones)
9. reedpipes (confined aerophones)
10. [reedpipes with single reed]
11. [reedpipes with single reed: with cylindrical bore]
12. double clarinets

Anotations

Scope note:

Double clarinets of India and Ceylon, consisting of two parallel pipes each with a single beating reed and a regionally variable number of fingerholes, fitted into a globular gourd made airtight with wax which acts as both blowpipe and wind chamber. Usually the right pipe serves as a melody pipe and the left as a drone pipe with its holes plugged as required.