Theory
🎶HarmonyIntermediateroman-numeralsharmonic-analysisfunctional-harmonymusic-theorynotation

Roman Numeral Analysis

A standardized notation system using Roman numerals (I, ii, iii, IV, V, vi, vii°) to identify chords by their scale degree and quality, enabling universal harmonic analysis independent of key, facilitating communication about chord progressions, and revealing functional relationships across all tonal music.

Interactive Visualizations

Major Key Roman Numeral Reference

Complete chart of I-vii° with chord qualities and scale degrees

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Minor Key Roman Numeral Reference

Natural, harmonic, and melodic minor Roman numeral systems

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Chord Quality and Numeral Case Convention

Uppercase vs. lowercase, symbols (°, +, ø) and their meanings

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Figured Bass Integration

How Roman numerals combine with figured bass (V⁶₅, ii⁶, I⁶₄)

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Seventh Chord Notation

Complete reference for notating all seventh chord types

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Transposition Using Roman Numerals

How progressions translate across keys

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I. Conceptual Positioning

🎯Problem Solved

How to analyze and communicate harmonic progressions universally—Roman numeral analysis transcends specific keys (C-F-G becomes I-IV-V), reveals functional patterns (all ii-V-I progressions work identically), enables transposition (same numerals, different keys), and provides a lingua franca for musicians discussing harmony across genres and eras.

🔨Skills Built

  • Label chords with Roman numerals in any key
  • Determine chord quality from numeral notation
  • Analyze progressions functionally (not just by letter names)
  • Transpose progressions between keys using numerals
  • Recognize common patterns (I-IV-V, ii-V-I) instantly
  • Communicate harmonic ideas universally

🔗Connects To

harmony/overviewharmony/functionsharmony/progressionsharmony/major-keyharmony/minor-keychords/seventh-overviewscales/diatonicjazz/harmonytheory/key-signaturesfigured-bass/notation

II. Knowledge Architecture

This section will be populated with core concepts, sub-concepts, and micro-concepts in future MDX content.

IV. Charts, Maps & Tables

Visual artifacts will be embedded in MDX content as React components.

V. Logical Learning Sequence

Learning progression will be defined in MDX content.

VII. Analytical Application

Cross-genre examples (classical, jazz, pop, film) will be provided in MDX content.

IX. Cross-Topic Network

Concept bridges and overlapping zones will be detailed in MDX content.

XI. Synthesis & Meta-Understanding

Mastery meaning and transformational impact will be explored in MDX content.

What This Unlocks

  • Enables key-independent harmonic analysis

  • Foundation for understanding functional harmony

  • Basis for jazz chord-scale theory

  • Standard for composition and arranging