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. aerophone components

Anotations

Scope note:

Wood or metal discs, cylinders, or cup-shaped attachments located below the double reed in some European and most non-European double reed instruments, serving as a lip rest. The reed is taken into the player's mouth and the lips pressed against the pirouette.