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 double reed]
11. [reedpipes with double reed: with cylindrical bore]

Anotations

Scope note:

Reedpipes with double reed and cylindrical bore, with a wind cap covering the reed, a body curved at the lower end and slightly flared at the opening, one thumbhole, seven fingerholes, and one or more ventholes in the curved lower section; modern versions often have a key above the top fingerhole.