What is Roman Numeral Analysis?

Roman Numeral Analysis is a system used in music theory to represent chords based on their position within a key. It is known for providing a clear way to understand harmonic structure and chord relationships.

The style typically uses Roman numerals (I, ii, iii, IV, V, vi, vii°) to indicate scale degrees, with uppercase numerals representing major chords and lowercase representing minor chords.

Roman Numeral Analysis emphasizes function and context, showing how each chord relates to the tonic and how progressions create movement and resolution.

The system can also include symbols for chord quality and extensions, such as diminished (°), augmented (+), or seventh chords (V7), adding more detail to the analysis.

Today, Roman Numeral Analysis is widely used in music education, composition, and analysis, valued for its ability to simplify and generalize chord progressions across different keys.