"Indian music is essentially impersonal, reflecting "an emotion and an experience which are deeper and wider and older than the emotion or wisdom of any single individual. Its sorrow is without tears, its joy without exultation and it is passionate without any loss of serenity. It is in the deepest sense of the word all human." (source: The Dance of Shiva - By Ananda Coomaraswamy p. 94). . .
It is an art nearest to life; in fact, W. B. Yeats called Indian music, "not an art, but life itself," although its theory is elaborate and technique difficult. .
J. T. Coker : "Music has been a cultivated art in India for at least three thousand years. It flows from the essential element of chant in ancient Vedic religious expression. More than any other musical form, the Indian raga tradition structurally and acoustically corresponds to and embodies the spiritual/religious experience. It offers a direct experience of the consciousness of the ancient world, with a range of expression rarely accessible today. All Indian instruments are played as extensions of the ultimate, because most natural, instrument -- the human voice -- that chants the sacred poems, mantras, and invocations of the gods. "
"The European musical scale has been reduced to twelve fixed notes by merging close intervals such as D sharp and E flat -- a compromise of necessity in the development of the mathematical harmony that made possible the triumphs of Western orchestration, causing the Western keyboard, unlike instruments from other musical cultures, to be inherently "out of tune. "We can hear in Indian music the richest correlation of sound with the origins and manifestations of spiritual consciousness. The idea of nonmanifest sound -- the essence in the interval between notes -- is akin to the New Testament conception of the Word, and underlies and pervades the music. It lies beneath all that is manifest in nature, cosmic and microcosmic, and realizes itself as the multiplicities and differentiations of existence."
(source: A Handful of Beauty: Music as a Vehicle of Spirit - by J. T. Coker Sunrise magazine, Theosophical University Press). Courtesy @Sitharakrishnakumar