Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. sound device components
7. keyboard instrument components
8. keyboards (sound device components)

Anotations

Scope note:

Keyboards, usually of organs but also found on carillons, harpsichords, clavichords, and pianos, played by the feet and connected either to their own pipes, bells, or strings, or to those of the manual keyboards.