My new book, now available from the publisher Traumzeit, is the complete guide to polyphonic overtone singing. I am very proud of this, and hope you will check it out.
An Overtone Experience / Eine Oberton-Erfahrung
15 “Songs” for polyphonic overtone singing, with commentary and exercises
+includes audio files of all songs and exercises sung by me
+dual language – text given both in English and German
+versions for both women’s and men’s voices
+progressive – each song presents a new skill with exercises for practice
+a repertoire of pieces suitable for performance
+variety of classical and popular styles
+optional keyboard accompaniments, adaptable to other instruments
http://www.traumzeit-verlag.de/gesamtverzeichnis/singen-stimme–oberton-singen/stuarthinds.php