An elegant primer on the principles and theories of music. This innovative book presents the elements of music by building upon the long-known fundamentals of acoustics, proportion and relationship--a kind of musical metaphor. In combination with novel graphics and symbols, the principles behind melody, rhythm, and harmony come alive, along with those of Western musical notation. From intervals, triads, and the circle of fifths to major/minor keys and modulation, Dr. Martineau presents a splendid primer on music theory for the novice and professional alike.