About Nāda yoga

Nāda yoga (नादयोग) is an ancient Indian metaphysical system. It is equally a philosophical system, a medicine, and a form of yoga. The system's theoretical and practical aspects are based on the premise that the entire cosmos and all that exists in the cosmos, including human beings, consists of sound vibrations, called nāda. This concept holds that it is the sound energy in motion rather than of matter and particles which form the building blocks of the cosmos.
Male and female yogis in 17th- and 18th-century India

Yoga styles – The wide variety of traditional & modern practices

There is a wide variety of schools of , practices, and goals in Hinduism, Buddhism, Jainism and other traditional and modern yoga styles practiced worldwide. Within the major branches of yoga such as haṭha, lāya, rāja, jñāna, and there are many different schools and lineages, both extant and defunct. Since the late 19th century, a great number of distinct new styles of "Yoga" have been introduced by individual teachers. Some schools and traditions are occasionally .