Walter Piston says in his Harmony, 3rd Edition, “Music without dissonant intervals is often lifeless and negative, since it is the dissonant element which furnishes much of the sense of movement and rhythmic energy. The history of musical style has been largely occupied with the important subject of dissonance and its treatment by composers. It cannot be too strongly emphasized that the essential quality of dissonance is its sense of movement and not, as sometimes erroneously assumed, its degree of unpleasantness to the ear.”
It is the dissonant intervals in music, when used appropriately and judiciously, that tend to “push” or “pull” a musical idea along. (J. S. Graves) See my page, Favorite Quotes, for more quotes about music and the art of living. Feel free to comment or disagree with any of my blog comments or quotes.