Assertion: marimba's key | /r/MadeOf | durable material
Facets:
Source sentences:
text: Unwrapped mallets , used on glockenspiel, xylophone and other instruments with keys made of durable material, have heads made of brass, rubber, nylon, acrylic, wood, or other hard materials.
text: , used on glockenspiel, xylophone and other instruments with keys made of durable material, have heads made of brass, rubber, nylon, acrylic, wood, or other hard materials.