What are the characteristics and significance of non-functional harmony in music composition?

Non-functional harmony in music composition is characterized by the use of chords that do not follow traditional harmonic progressions. Instead of leading to a sense of resolution, non-functional harmony creates a more dissonant or ambiguous sound. This can add complexity and tension to the music, allowing for more experimental and avant-garde compositions. The significance of non-functional harmony lies in its ability to challenge traditional tonal structures and create unique and innovative musical expressions.