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With this background, I was pleased to see the research work done by Dr.Vidyadhar Oke and the 22-Shruti-Harmonium and 22-Shruti-Metallophone created by him. Dr.Oke has given the underlying mathematical formula in a simplified manner and that provides accurately all the 22 Shrutis. The 3 prime ratios stated by Bharatmuni as 1)'Poorna Shruti', 2) 'Nyuna Shruti', and 3) 'Pramana Shruti' correspond to 1.0535, 1.0416, and 1.0125 respectively and starting with the Shadja, they come with an astonishing sequence of 1323, 1323, 1323,1, 1323,1323,1 and provide the frequencies of all the 22 Shrutis right upto the 9th decimal. Dr.Oke has created the accurate sounds of these 22 Shrutis using the Synthesizer technology and thereafter provided them under 12 keys in every Saptak by modifying the structure of traditional Harmonium. In his 22-Shruti-Harmonium, one can select the required Shruti for any Swara quite easily by pulling a knob, and then play the Raga. He has also created a Metallophone which can provide readily, the precise sounds of these 22 Shrutis. These 2 instruments should be useful to harmonium players, other musicians and vocalists as a ready reference of the sounds of 22 Shrutis, and for facilitating riyaz.

I congratulate Dr.Oke for making a good contribution to the cause of Indian Classical Music and wish him success. "