It seems difficult to believe that the solid material is actually vibrating. But it's true at the atomic level.
The micro world is invisible and we can not hear any sound.　However this world is made of atom. Is it because of that ?
I sometimes feel sounds and echos in the space where there is no sound to emit. In most cases, it will be a memorable one.　But it is not all that.
Kato Etsuro often goes to field and sketches it. When entering deep into nature, our senses are sharp.
Every existence that surrounds us lives and breathes and shakes.　He stood in it and he heard a sound like sensitive wild animal.
Then, he hears "the sound like shaking the space and starting up the world" in his ears.　It is the sounds reminiscent of polyphonic songs (motets),
in which several melodies intertwine like rising air currents.
That sound that make him head towards creation does not stop even now.