# Chord Progression Roman Numeral Visualizer

Analyze a chord progression by key, Roman numerals, harmonic function, transposition, and cadence clues.

> Canonical page: https://elysiatools.com/en/tools/chord-progression-visualizer

- **Category:** Media

- **Keywords:** chord progression, roman numerals, music theory, transpose, cadence, harmony

## Overview

Uses an explicit twelve-note, major/natural-minor theory model to label diatonic roots and common seventh-chord qualities. It shows a transposed progression and a browser-side Web Audio audition button. Borrowed chords and ambiguous spellings are shown as chromatic rather than guessed; this is a theory aid, not audio chord recognition.

## Inputs

- **Chord Progression** (textarea): Cmaj7 - Am7 - Dm7 - G7
- **Analysis Key** (select)
- **Transpose To** (select)
- **Playback Tempo (BPM)** (number)

## When to use

- When analyzing the harmonic structure and Roman numeral degrees of a written chord progression.
- When transposing a chord sequence from one key to another while maintaining correct theoretical relationships.
- When teaching or studying music theory concepts like diatonic functions, cadences, and chord qualities.

## How it works

- Enter your chord progression as text, separating the chords with hyphens or spaces.
- Select the analysis key or let the tool auto-detect it, then choose a target key for transposition.
- Adjust the playback tempo in BPM and click analyze to view the Roman numerals, harmonic functions, and play the progression via Web Audio.

## Use cases

- Analyzing a jazz turnaround to identify the Roman numeral degrees and harmonic functions.
- Transposing a pop chord progression to fit a vocalist's range while checking the new chord names.
- Demonstrating cadence types and chord relationships in a music theory classroom setting.

## Frequently asked questions

### Can this tool recognize chords from an uploaded audio file?

No, this is a text-based theory tool. It analyzes written chord progressions, not audio recordings.

### How does the tool handle borrowed or out-of-key chords?

Chords outside the diatonic key are labeled as chromatic rather than guessed, keeping the analysis theoretically precise.

### What chord qualities does the visualizer support?

It supports standard triads and common seventh-chord qualities within a twelve-note major and natural-minor framework.

### Does the Web Audio playback require external plugins?

No, the audition feature plays directly in your web browser using built-in Web Audio capabilities.

### Can I transpose a progression to a minor key?

Yes, you can select any major or natural-minor key from the transposition options.

## Related tools

- [Chord Progression Finder from Melodic Sketch](https://elysiatools.com/en/tools/youtube-music-chord-finder): Enter a melodic contour as scale degrees (1-7 or do-re-mi) plus a target key, and get candidate diatonic chord progressions ranked by voice-leading smoothness, with roman-numeral analysis and an audio demo.
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- [Audio Key Detector](https://elysiatools.com/en/tools/audio-key-detector): Detect the musical key of a track

## Samples

- [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
- [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
- [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
- [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion