The most widely-known and used free-reed aerophone in India is the harmonium and have been imported from the West. No foreign instrument, however, has caused such a commotion as the harmonium and none is used so extensively, be it in classical, light, film or folk music. It is probably the most commonly used instrument in northern India. General Features of Indian Harmonium Application: ▸ Professional octave range (C2-B5), max octave range with scale changer (C#1-A#6) ▸ Scale Changer