You may be sitting in a room reading this book. Imagine one note struck upon the piano. Immediately that one note is enough to change the atmosphere of the room - proving that the sound element in music is a powerful and mysterious agent, which it would be foolish to deride or belittle.
Aaron Copland: A Reader : Selected Writings 1923-1972 (ed. Psychology Press, 2004) - ISBN: 9780415939409