More than a well-written, scholarly but easy to follow academic book on the distinctions of "deep listening" and "trancing", this extraordinary treatise by Judith Becker includes insights from her ethnomusicological field work with Balinese and Suwalesi spirit trancers in Indonesia, Sufi Qawwali singers in India, and Pentecostals in the United States. Moreover, she provides a fine history of European trancing, including Mesmerism, Italian tarantismo, and related hypnotism; the Indian rasa system of fundamental emotions; various historic and ethnic conceptions of ego, notions of an individual's self and consorts, and associated examples of possession. And if that is not sufficient, she also correlates her anthropological and psychological findings with neuroscience and the work of Nobel scientist Gerald Edelman, and with cognitive philosophy. Emotions (psycho-neuro-endocrinolgoic mediated) are the key, through the aesthetic appreciation in profound listening [Arabic tarab] that can stop time, drop ego-sense, create bliss, and move to tears, and, for trancing, through cultural conditioning and belief systems coupled with strong music-entrained movements, which can development amnesia and anesthesia. Her discussions have a framework of holism, process and flow, and mutual feedback systems, which include the union of musicians, music, and trancers. The book has some musical scores, color photographic plates, and a CD with musical exemplars. The reader will apt to be fascinated and left with much to ponder, especially since most people have had some similar powerful experiences while listening to music. This excellent book brings to bear the role of music in consciousness-mind.