Overtone singing is a vocal technique that creates the auditory impression of polyphony by filtering individual overtones from the sound spectrum of the voice by controlling the resonances in the vocal tract in such a way that they are perceived as separate tones. Or more simply put, it is a way of a singer producing several notes at the same time. A second flute-like tone suddenly sounds about two octaves above the normal voice, which seems to float crystal clear and hardly locatable in space. The sound is reminiscent of a glass harp, exotic and yet strangely familiar. It touches in a peculiar way, has a calming effect and is almost physically palpable. German singer Nastascha Nikeprelevic is an amazing exponent of this wonderful art. Listen and be left speechless.
