In music, as in the visual arts, light and dark create nuance, depth and motion, evoking emotion, curiosity and sometimes larger dramas in the play of sonorous shadowing, complementarities, and unexpected movements. Much as the term chiaroscuro, whose meaning is light-dark, refers in art to that  intimate relation between light and dark to great effect, so in music light-dark contrasts – Love & Loathing, War & Peace, Night & Day – open out onto old and new worlds.