"In all things, which are

     derived from the vibrations and formed

   by them, sound is hidden, like the fire in the flint;     and every atom in the universe confesses with its tone: My sole origin is sound. If any solid or hollow body of sound is struck, it gives the answer: I am sound.

       In the Vedas, this means -

"           Nadabrahma the world is sound."

                                       Hazrat Inayat Khan