When we read in Bharata's classical book of the twenty-two microtones in ancient Indian octaves, of innumerable scales and modes, and of seventeen me… - Curt Sachs

The first iconographic record of the hand bell or ghaṇṭā is not conclusive. As late as the seventh century it is depicted in one of the caves at Aurangabad; yet five hundred years earlier, the greco-Syrian philosopher, Bardesanes, had related that while the Hindu priest prayed, he sounded the bell. It was small and tulip-shaped, with a thick clapper. As it was exclusively used by priests in the worship of Hindu divinities, the handle was finely decorated with religious symbols, such as Siva's trident, Vishnu's eagle or Hanuman, the king of the apes.

[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".

So vital in East Asiatic music is the delicate vacillation that dissolves the rigidity of pentatonic scales that all possible artifices have carefully been classified, named, and, by the syllabic symbols of their names, embodied in notation: ka (to quote the terms of Japanese koto players); that is, sharpening a note by pressing down the string beyond the bridge; niju oshi, sharpening by a whole tone; é, the subsequent sharpening of a note already plucked and heard; ké, sharpening it for just a moment and releasing the string into its initial vibration; yū, the same, but making the relapse very short before the following note is played; kaki, plucking two adjoining strings in rapid succession with the same finger; uchi, striking the strings beyond the bridges during long pauses; nagashi, a slide with the forefinger over the strings; and many others [….] Recent investigation has made clear that this tablature is a Chinese transcription of Sanskrit symbols used in India. Indeed, the graces of long zithers, unparalleled in East Asiatic music, are nothing else than the gamakas of India, imported with the sway of Buddhism during the Han Dynasty and given to the technique of Chinese zithers, which became the favorite instruments of meditative Buddhist priests and monks.