Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Furnishings (hierarchy name)
5. furnishings (works)
6. [furnishings by form or function]
7. furniture
8. [furniture by form or function]
9. seating furniture
10. single seating furniture
11. chairs (furniture forms)
12. [chairs by function]

Anotations

Scope note:

Term generally applied to a variety of chairs with adjustable back heights and sometimes adjustable or revolving seats intended for use while playing a musical instrument. Use "music stools" for similar seating with a revolving or adjustable seat but no back and intended for use while playing the piano or other musical instruments.