# Chord Sequence

> Chord Sequence (chordsequence.com) is a free online chord progression builder for songwriters, producers, and music students. Build progressions with drag-and-drop, hear them with real-time playback across 13+ rhythm styles, export as WAV, and explore ready-made genre libraries — no account or DAW required.

## Core Tool
- [Chord Progression Builder](https://chordsequence.com/): The main app. Drag-and-drop chord editor with real-time playback, 37 chord types, key transposer, and WAV export. Free, no account required, works in any browser.

## Learn: Music Theory & Chord Progressions
- [What is a Chord Progression?](https://chordsequence.com/learn/what-is-a-chord-progression/): Beginner's complete guide — definitions, Roman numeral system, common progressions, and how emotion maps to harmony.
- [Chord Progressions for Beginners](https://chordsequence.com/learn/chord-progressions-for-beginners/): The 4 chords every songwriter needs — I–V–vi–IV, 12-bar blues, and how to get started writing songs.
- [Chord Inversions](https://chordsequence.com/learn/chord-inversions/): What chord inversions are, slash chord notation (C/E, G/B, D/F#), descending bass lines, and voice leading — with interactive examples.
- [Jazz Chord Progressions](https://chordsequence.com/learn/jazz-chord-progressions/): Complete guide to ii–V–I, jazz blues, bossa nova, turnarounds, and modal jazz with interactive players.
- [Circle of Fifths Explained](https://chordsequence.com/learn/circle-of-fifths-explained/): How to use the circle of fifths for songwriting, understanding key relationships, and modulation.
- [How to Transpose Chords](https://chordsequence.com/learn/how-to-transpose-chords/): Complete transposition guide with semitone reference chart and worked examples.
- [Music Theory Basics for Songwriters](https://chordsequence.com/learn/music-theory-basics-for-songwriters/): Intervals, scales, and diatonic chords — the minimum theory needed to write songs.

## Ready-Made Progression Libraries
- [Jazz Progressions](https://chordsequence.com/progressions/jazz/): Curated jazz chord progressions — ii–V–I, turnarounds, tritone substitutions — ready to play and edit.
- [Pop Progressions](https://chordsequence.com/progressions/pop/): The most common pop chord progressions with interactive playback. I–V–vi–IV, vi–IV–I–V, and more.
- [Lo-Fi / Chill Progressions](https://chordsequence.com/progressions/lo-fi/): Lo-fi chord progressions with extended chords for relaxed, laid-back vibes.
- [Neo Soul Progressions](https://chordsequence.com/progressions/neo-soul/): Neo soul harmony with maj7, min9, and dominant 13th chords.
- [EDM Progressions](https://chordsequence.com/progressions/edm/): Electronic dance music chord progressions for house, trance, and synth-based music.
- [Gospel / Worship Progressions](https://chordsequence.com/progressions/worship/): Gospel chord progressions for worship music and contemporary Christian music.
- [Happy Progressions](https://chordsequence.com/progressions/happy/): Upbeat, major-key chord progressions that convey joy and energy.
- [Sad Progressions](https://chordsequence.com/progressions/sad/): Minor-key and melancholic chord progressions for emotional songwriting.

## Song Chord Charts
Interactive chord charts with synchronized lyrics — press Play and follow each chord in real time.
- [All Song Chord Charts](https://chordsequence.com/songs/): Full catalog of interactive chord charts for popular songs.
- [Holy Forever — Chris Tomlin](https://chordsequence.com/songs/holy-forever-chris-tomlin/): Worship song. Key of C, Capo 1. Chords: G, C, F, Am, Dm, Em.
- [Wonderwall — Oasis](https://chordsequence.com/songs/wonderwall-oasis/): Rock/Britpop (1995). Key of F#m, Capo 2. Chords: Em7, G, Dsus4, A7sus4, Cadd9.
- [Hallelujah — Leonard Cohen](https://chordsequence.com/songs/hallelujah-leonard-cohen/): Folk/Pop. Key of C. Chords: C, Am, F, G, E.
- [Hermoso Momento — Oasis Ministry](https://chordsequence.com/songs/hermoso-momento-oasis-ministry/): Worship. Key of Eb. Chords: Fm, Ab, Eb, Bb.
- [Creo en Ti — Julio Melgar](https://chordsequence.com/songs/creo-en-ti-julio-melgar/): Worship. Key of Am. Chords: Am, F, C, G.
- [Hay Poder / Yeshua — Averly Morillo](https://chordsequence.com/songs/hay-poder-yeshua-averly-morillo/): Worship. Key of G. Chords: G, D, Em, C.
- [Jesus Be the Name — Elevation Worship](https://chordsequence.com/songs/jesus-be-the-name-elevation-worship/): Worship. Key of D. Chords: D, A, Bm, G.
- [Autumn Leaves — Jazz Standard](https://chordsequence.com/songs/autumn-leaves-jazz-standard/): Folk/Jazz. Key of G minor. Composer: Joseph Kosma (1945). Chords: Am7b5, D7, Gm, Cm7, F7, Bbmaj7, Ebmaj7.

## Tools
- [Chord Transposer](https://chordsequence.com/tools/chord-transposer/): Instantly transpose any chord or progression to a different key. Includes semitone reference chart and worked examples.
- [Circle of Fifths](https://chordsequence.com/tools/circle-of-fifths/): Interactive circle of fifths for navigating key relationships.
- [Key Detector](https://chordsequence.com/tools/key-detector/): Detect the key of any chord progression.

## About
- [About Chord Sequence](https://chordsequence.com/about/): About the tool and its creator.
- [Elías Corsino Saldaña](https://chordsequence.com/about/elias-corsino/): Creator of Chord Sequence — Musician & Software Developer from the Dominican Republic. Plays piano, bass, guitar, and drums. Started learning music at age 12.

## Comparisons
- [Best Chord Progression Generators 2026](https://chordsequence.com/best-chord-progression-generators/): Ranked comparison of Chord Sequence, ChordSeq AI, DBDone AI Chords, OneMotion, Mario Nieto Chord Generator, and Xfer Cthulhu — features, pricing, YouTube demos, and verdict.

## Licensing
Content on this site (music theory articles, chord charts, tool descriptions) is available for AI citation and summarization for informational, educational, and search purposes. Training use is restricted — see /robots.txt.

## Key Facts
- 100% free, no account required
- Works in-browser, no download or DAW needed
- 37 chord types supported (major, minor, 7th, maj7, min7, diminished, augmented, suspended, and more)
- 13+ rhythm styles with real audio samples (pop, rock, jazz, lo-fi, worship, Latin, and more)
- WAV export for use in any DAW (Ableton, Logic, GarageBand, FL Studio)
- Chord progressions stored in browser — private, no server uploads
- Works offline after first load