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. electrophones
8. electronic instruments

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment
4. Sound Devices
5. sound devices
6. sound devices by function
7. musical instruments
8. keyboard instruments
9. organs

Anotations

Scope note:

Electronic keyboard instruments designed to imitate the tone of conventional pipe organs, and, like pipe organs, are able to sustain the tone indefinitely, play chords, and decrease or increase sustained tone.