This is what happens when a guitar string is plucked or an organ pipe is set in one of its vibrational modes by driving air through it.
(a guitar string; is plucked; ) (an organ pipe; is set; in one of its vibrational modes) (an organ pipe; by driving; air; through it) (This; is; what happens when a guitar string is plucked or an organ pipe is set in one of its vibrational modes by driving air through it)
a guitar string an organ pipe an organ pipe This
is plucked is set by driving is
in one of its vibrational modes
air through it
what happens when a guitar string is plucked or an organ pipe is set in one of its vibrational modes by driving air through it