Swami Muktananda introduced the Siddha Yoga path all over the world, creating what he called a "meditation revolution." He is the author of Play of Consciousness, his spiritual autobiography. Gurumayi Chidvilasananda is a spiritual teacher, author, musician, and the head of the Siddha lineage of meditation masters in the ancient yogic tradition of India. Swami Anantananda, a monk in the Siddha Yoga tradition and a disciple of meditation master Gurumayi Chidvilasananda, teaches and writes about the development of spiritual awareness.