Hornbostel - Sachs
type: ConceptScheme

Non-idiophonic interruptive instruments
type: Concept
narrower: Whirling aerophones
notation: 412.2

Whirling aerophones
type: Concept
broader: Non-idiophonic interruptive instruments
definition: The air itself is the vibrator in the primary sense. The vibrating air is not confined by the instrument. The interruptive agent is not a reed. The interruptive agent turns on its axis. Bull-roarer, ventilating fan.
in scheme: Hornbostel - Sachs
notation: 412.22