organ [2]
Wind instrument with several keyboards; it produces sound by means of pipes that are fed by a blower.
reed pipe 
Pipe in which sound is produced by the vibration of a tongue on the open face of a pipe.
tongue 
Small sheet of flexible metal that vibrates on the open face of the pipe; the amplitude of the vibrations determines the pitch of the note.
block 
Movable part inserted into the foot of the pipe; its lower end holds the shallot.
tuning wire 
Metal stem that adjusts the length of the shallot’s vibrating part to tune the pipe.