The strange, never-ceasing drones used in the choral singing of Tibet belong in the Indian, not the Chinese sphere of Tibetan civilization. - Curt Sachs

[And here is what Sachs has to say about Bharata's ancient text the Natya-Shastra, which he agrees could be as early as the 4th century BCE and about which he tells us that it] "testifies to a well-established system of music in ancient India, with an elaborate theory of intervals, consonances, modes, melodic and rhythmic patterns". ... "Bharata's text was probably rehandled as early as antiquity, and it may confirm the idea that Bharata himself wrote his treatise much earlier" ... [He also tells us that this text establishes that it represents a stage where the] "slow transition from folk-song to art-song, from hundreds of tribal styles to one all-embracing music of India […] had long ago come to an end".

[In Burmese music,] "These penetrant oboes, which lead the melody instead of the tinkling gongs of Java and Bali, are definitely Indian. But still more Indian is the unparalleled drum chime of, normally, twenty-four carefully tuned drums, suspended inside the walls of a circular pen, which the player, squatting in the center, strikes with his bare hands in swift, toccata like melodies with stupendous technique and delicacy"

The roots of music are more exposed in India than anywhere else. The Vedda in Ceylon possess the earliest stage of singing that we know, and the subsequent strata of primitive music are represented by the numberless tribes that in valleys and jungles took shelter from the raids of northern invaders. So far as this primitive music is concerned, the records are complete or at least could easily be completed if special attention were paid to the music of the ‘tribes’…[There are] hundreds of tribal styles…