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 cylindrical bore]
10. trumpets (aerophones)
11. end-blown trumpets
12. trombones (trumpets)

Anotations

Scope note:

Trombones that operate with at least three valves rather than a slide mechanism. These may have originated in Vienna ca.1830, but evidence exists of earlier versions. The valves were added to avoid the intricacies of maneuvering the slide, and made playing fast passages easier. The instrument remains in use in orchestras and also in jazz ensembles.