Harmony plays a crucial role in a composition as it refers to the combination of different pitches and chords played simultaneously. It provides a foundation and structure for the music, helping to establish mood, convey emotion, and create tension and resolution. Harmony also defines the relationships between different musical elements and adds richness, depth, and color to the overall composition. It can create a sense of unity and coherence in a piece of music and contribute to its overall aesthetic and artistic expression.
