The Harmonium is infact not a traditional Indian instrument at all but was brought by the Europeans to India during the time of English rule.
The English brought several other instruments like Piano, Organ and Violin, the Harmonium however, is an instrument that needs no tuning (like other stringed instruments) and the setting of keys is so simple that one can fix every key according to the pitch of voice and play it easily. It is for this reason (as well as for the love of its sound) that, in a very short period of time, the Harmonium became so popular in India that its sound could be heard in every corner of the country.
This book explains in an easy and simple fashion the basic principles of playing tunes on Harmonium. If a student of music tries to study and play according to the directions, he will not find any difficulty in playing. This book illustrates and explains the sitting positions, handling of the Harmonium, using fingers on keys, and handling of bellows according to the tune of songs.
Aside from the pure voice of Bhakti, the Harmonium is the number one instrument in singing;and sharing songs of devotion - of bhajan and kirtan.