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ChordProgressions.org
What it is
ChordProgressions.org is a free browser studio for building, hearing, studying, and exporting chord progressions for guitar and piano. Its tools include generators, builders, finders, identifiers, analyzers, and transposers. Guitar shapes and piano voicings can be adjusted for tuning, capo position, difficulty, inversions, and fingering. Analysis can display Roman numerals, Nashville numbers, chord functions, cadence points, borrowed chords, and an estimated key with a confidence rating. The studio accepts MIDI input and imports MIDI, MusicXML, project files, and plain-text chord sheets. Browser-based audio analysis produces an editable chord timeline with a confidence score. Exports include MIDI, WAV, chord-chart PDF, PNG, SVG, plain text, CSV, JSON, MusicXML, and share links. Practice tools loop progressions with a metronome and count-in and provide ear-recognition and playing practice in every key. Projects autosave locally, and imported files are read in the browser rather than uploaded.
For and against
For
- Free browser-based studio
- Supports guitar and piano voicings
- Detailed theory analysis
- Many export formats
- Local project autosave
Against
- JavaScript required for studio editing
- Audio analysis is an estimate
- No third-party integrations are stated
The verdict
ChordProgressions.org offers a broad, free toolkit for creating and understanding progressions. Its local storage and export options are useful, while JavaScript is necessary for the interactive studio.
Who it suits
It is suited to guitarists, pianists, songwriters, and music-theory learners who want browser-based progression tools. It also fits users needing MIDI, notation, diagram, or data exports.
Plans and prices
ChordProgressions.org
Free in-browser studio; JavaScript required for studio playback and editing
Read 3 Oct 2026 · chordprogressions.org
On the record
- Audio analysis
- Audio decoding and analysis run in the browser, and the resulting chord timeline is an estimate with a confidence score that remains editable.chordprogressions.org · read 3 Oct 2026
- Exports
- Export options include MIDI, WAV, chord chart PDF, PNG and SVG diagrams, plain text, CSV, JSON, MusicXML, and a share link.chordprogressions.org · read 3 Oct 2026
- Guitar and piano
- It generates guitar shapes and piano voicings, with settings for tunings, capo positions, difficulty, inversions, and fingering.chordprogressions.org · read 3 Oct 2026
- Integrations
- The studio lists MIDI device input and output and imports MIDI and MusicXML files; no third-party service integrations are stated on the opened page.chordprogressions.org · read 3 Oct 2026
- Intended users
- The site presents tools and learning materials for guitarists, pianists, songwriters, and people learning music theory.chordprogressions.org · read 3 Oct 2026
- Library size
- The site says its progression library contains more than 130 patterns across genres.chordprogressions.org · read 3 Oct 2026
- Local storage and privacy
- The site says projects autosave in the browser and stay on the device; imported files are read in the browser and never uploaded.chordprogressions.org · read 3 Oct 2026
- MIDI and file support
- The studio supports MIDI input and output and imports MusicXML, project files, and plain-text chord sheets.chordprogressions.org · read 3 Oct 2026
- Practice
- The practice tool loops a progression with a metronome and count-in, and offers ear-recognition and playing practice in every key.chordprogressions.org · read 3 Oct 2026
- Progression tools
- Its listed tools include a progression generator, builder, finder, identifier, analyzer, and transposer.chordprogressions.org · read 3 Oct 2026
- Purpose
- The site offers a browser-based studio for creating, hearing, analyzing, customizing, and exporting chord progressions for guitar and piano.chordprogressions.org · read 3 Oct 2026
- Security limitation
- The studio requires JavaScript for playback and editing; the progression library, key reference, theory articles, and chord tables work as plain HTML without it.chordprogressions.org · read 3 Oct 2026
- Theory analysis
- The analyzer can show Roman numerals, Nashville numbers, chord functions, cadence points, borrowed chords, and a key estimate with a confidence rating.chordprogressions.org · read 3 Oct 2026
