Harmonium is additionally called a harmonium free-hand keyboard instrument. Harmonium is additionally called a "melodeon" and "pump organ" keyboard instrument. A Harmonium is often made work using either the foot and hand. during a foot pumped harmonium, the player presses the pedals together with his or her feet which operates a bellows sending air to the reeds. during a hand-pumped harmonium, the player pushes/pulls a handle back and forth with hands that joined the bellows and blows the air. making 22 shrutis available within 12-keys as this modified into hand-pumped harmonium. Mohan music school has professional composers of classical and folk music.