Stream Peeper (1975): Find it on Netflix, Prime Video, Hulu & more

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PEEPER on Instagram: "It sounds impossible at first, like a recording trick, yet the human voice is producing two steady tones at once without any technology involved. This rare technique is known as overtone singing, where a vocalist carefully shapes their mouth, throat, and breath to isolate harmonic frequencies that normally remain hidden. Practiced for centuries in regions such as Tuva and Mongolia, singers learn to hold a deep fundamental note while amplifying higher overtones that float ab