In "Overtone Singing", ethnomusicologist and singer Mark van Tongeren provides a fascinating insight into the timeless and universal aspects of sound and vibration. Grounded in a decade-long study of Asian music, he draws upon various fieldwork experiences, interviews with eastern and western musicians, in addition to the work of numerous scholars. He presents a multidisciplinary vision on sound that runs from World and contemporary music to the science of acoustics and perception, to music philosophy and the spiritual dimensions of music. Written in a non-technical style, this book and accompanying audio CD is an indispensable guide to musicians and music lovers seeking a deeper understanding of the nature of sound. For the new edition many small improvements have been made. The last part of the book, Quintessence: The Great Realm, has been thoroughly rearranged and expanded and is now much more 'quintessential' than it was in the first edition. The bibliography contained only books quoted in the text, and now contains other relevant titles as well. CDs are now listed in a separate discography at the end of the book, and the index has been expanded.