"The Scales of Heaven and Earth" reveals the tonal foundation of the ancient musical scales of India. Bharata Muni's "Natya Shastra," Dattila's "Dattilam," and Sharngadeva's "Sangita Ratnakara," three ancient authoritative texts, describe the microtones ("Shrutis"), notes ("Svaras"), and basic scales ("Gramas") that were fundamental to the ancient music. This book carefully explores the logic of this system, giving the relevant original Sanskrit passages with their translations, and contrasts it with the natural temperament of modern Indian classical music and the equal temperament of the...