Hornbostel - Sachs
The substance of the instrument itself, owing to its solidity and elasticity, vibrates and may radiate sound when struck either with a non-sonorous object (hand, stick, striker) or against a non-sonorous object (human body, the ground). The player creates clearly defined individual strokes.
Percussion idiophones
Percussion sticks
Percussion plaques
Percussion tubes
Percussion vessels
Idiophones struck directly
Percussion boulders