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. lip-vibrated aerophones
9. [lip-vibrated aerophones with conical bore]
10. [lip-vibrated aerophones with conical bore: natural]

Anotations

Scope note:

Valveless brass aerophones with conical bores. These were used mostly in the military to give signals to the infantry. Now chiefly used to refer to trumpet-like instruments of this kind in the Middle Ages and Renaissance, distinguished from modern "bugles."