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. reeds (aerophones)
9. free reeds
10. mouth organs

Anotations

Scope note:

Mouth organs which have a rectangular body that terminates in a plastic mouthpiece. They are played via a keyboard corresponding to 12 notes, and usually have two or three octaves. There are various sizes, classed by range, including soprano, alto, tenor, and bass.