The performance of Hindu religious music in India is rooted in theoretical principles related to the notion of sacred sound in the Hindu tradition. The ancient and sacred scriptures of the Vedas and Upanishads (c. third to first millenium b.c.) are said to have been heard by sages in trance and to embody the eternal primeval sound that brought about the creation of the cosmos; the Supreme Absolute of the universe, Brahman, is accordingly composed of this elemental sound,...