This is reacting the way animals react to sounds they hear but cannot yet identify, as children do before they are led to believe that music is notes or tunes.
Pre-conceptual hearing is open to all variants of vibration and timbre.   A good composer these days is trying to get you, the listener, back in touch with that kind of listening.  That is probably why there is so much percussion in classical music these days:  it has the magical quality that induces pre-conceptual hearing.


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