In percussion instruments, the vibrations are caused by hitting something such as the head of a drum and causing it to vibrate.
(the vibrations; are caused; by hitting something such as the head of a drum and causing it to vibrate; T:In percussion instruments) (the vibrations; by hitting; something)
the vibrations the vibrations
are caused by hitting
by hitting something such as the head of a drum and causing it to vibrate T:In percussion instruments
something