This is a list of instruments by Hornbostel-Sachs number, covering those instruments that are classified under 311.211 under that system. It includes instruments that are Stick zithers, musical bow cum stick, with rigid string carrier, curved flexible end, one attached resonator gourd. 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 References Notes 311.221 Gourd musical instruments