Neo-Riemannian theory

Neo-Riemannian theory is a way for musicians and music theorists to analyze and understand how chords relate to each other in modern music. It focuses on the transformations between chords—like shifting only one note or changing a note by a small step—to reveal patterns and connections that create smooth, cohesive progressions. This approach extends traditional theory by examining the geometric and conceptual relationships between chords, making it easier to see how different harmonic choices contribute to a piece’s overall flow and emotional impact. It’s a useful tool for studying harmony beyond simple chord progressions.