List of musical instruments by Hornbostel–Sachs number: 321.21

This is a list of instruments by Hornbostel-Sachs number, covering those instruments that are classified under 321.21 under that system. These instruments may be known as bowl lyres.
These instruments may be classified with a suffix, based on how the strings are caused to vibrate.

4: Hammers or beaters
5: Bare hands and fingers
6: Plectrum
7: Bowing
*71: Using a bow
*72: Using a wheel
*73: Using a ribbon
8: Keyboard
9: Using a mechanical drive
List