Indian music has a very long, unbroken tradition and is an accumulated heritage of centuries it is believed that the sage Narada introduced the art of music to the Earth. The origin can be traced back to Vedic days, neatly two thousand years ago. It is said that the sound that pervades the whole universe, i.e. Nadabrahma, itself represents the divinity. Organized Indian music owes its origin to the Samaveda. The Veda has all the seven notes of the raga karaharpriya in the descending order. The earliest Raga is speculated to be ‘Sama Raga’. Theories and treatises began to be written, how the primitive sound ‘Om’ gave rise to the various notes.
First reference to music was made by Panini (500 BC) and the first reference to musical theory is found in Rikpratisakhya (400 BC). Bharata’s Natya Shastra (4th Century AD) contains several chapters on music. This is probably the first work that clearly elaborated the octave and divided it into 22 keys.