The book deals with the subject of Srutis. The author feels the need for the correct perception of micro tones by all artists, vocalists and instrumentalists for their clear exposition of the Raga Bhava. The aim of the book is to popularize the idea of Srutis so that these mathematical conceptions may help them to a better exhibition of the art itself. The book will surely be of use to students of music who have gain sufficient understanding to be able to decipher any music by the twelve rough pitches in the octave. It will also help the general reader, the stage of the evolution of her music from simpler melodic pieces to the present art vista.