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
8. [pipes: aerophone components]
9. organ pipes (components)

Anotations

Scope note:

Organ pipes sounded by the vibrations of a flexible metal reed. For the simple pipes, used as complete and independent sound devices by themselves, in which the sound is produced through vibration of a single, double, or free reed, use "reedpipes."