Harmonium belongs to the family of free-reed aerophones. A small, tabletop size organ with bellows at the back that is pumped by one hand while the other hand plays the keyboard, it hold significance in music world. A standard Harmonium has a wooden box known as body, handles to move the instrument, bellows, keys, stops , reeds, reed board, coupler and scale changer. It is widely used in all forms of Indian music be it the classical, Hindustani, devotional or film music. It is known to be of persian origin.