Music is sound AND silence. It is the spaces BETWEEN the notes that create rhythm, melody, and meaning, and the greater the composer -- and the perfornance -- the better the quality of the silence. Legendary pianist Artur Schnabel said that it wasn't the notes but the silences between them he played better than other people. A few seconds more or less at crucial moments in the performance of a piece may mean the difference between a mundane and a transcendent experience.
What a strange power there is in silence. How many resolutions are formed, how many sublime conquests effected, during that pause when lips are closed and the soul secretly feels the eye of her Maker upon her.