The human voice vibrates naturally - but in such a way - to such a degree that it all sounds beautiful - it is the nature of the voice. We imitate su… - Wolfgang Amadeus Mozart

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The human voice vibrates naturally - but in such a way - to such a degree that it all sounds beautiful - it is the nature of the voice. We imitate such effects not only on wind instruments, but also with violins - even on clavier - but as soon as you go beyond the natural limits, it no longer sounds beautiful - because it is contrary to nature.