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.
				  	
 
					
					
						shallot 
						Hollow pipe with one open face, on which the tongue vibrates.
				  	
 
					
						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.
				  	
 
					
						wedge 
						Piece of wood that attaches the tongue to the upper end of the pipe.
				  	
 
					
						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.
				  	
 
					
						resonator 
						Resonant vessel that amplifies the vibrations of the shallot.