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

Anotations

Scope note:

Leverlike mechanical devices attached to or forming an integral part of a musical instrument or other sound device, functioning either as part of the direct sound-producing mechanism, as when admitting air to a pipe or causing a string to be struck or plucked, or, when on a confined aerophone, as devices governing those tone-holes that are out of reach or too large for the unaided finger.