Quiz: Remember the definition of mal de mer?
class of musical instruments in which a resonant solid material-such as wood, metal, or stone-vibrates to produce the initial sound. The eight basic types are concussion, friction, percussion, plucked, scraped, shaken, stamped, and stamping. In many cases, as in the gong, the vibrating material itself forms the instrument's body. Other examples include xylophones and rattles.