Chord Progression Builder

Runs entirely in your browser — no audio or data ever leaves your device (see methodology).

How It Works

The Chord Progression Builder lets you assemble a sequence of chords from this site's own documented chord roster and hear it played back, giving you a direct, practical way to test how a progression actually sounds before committing to it in a real arrangement or practice session. Every chord available in the builder draws from the identical, genuinely-authored chord data used throughout the rest of this site's guitar, piano, and ukulele chord pages — nothing in the tool is generated separately or inconsistently from what those pages already document. Building a progression using Roman-numeral or Nashville-number thinking (covered in Chord Progressions and The Nashville Number System) is directly supported: rather than only picking specific named chords, you can construct a progression by scale degree within a chosen key, letting the tool fill in the actual chord names for that key automatically — a direct, practical application of the diatonic-chord logic covered in Diatonic Chords, letting you experiment with functional patterns like I-V-vi-IV or ii-V-I across any key without manually working out each key's specific chords by hand first. Playback uses the correct chord quality and, where documented, real voicing information for each chord in your built progression, giving a genuinely useful preview of how the sequence will actually sound rather than only how it looks written down — a real, practical way to test whether a progression you're considering for a song or arrangement actually achieves the harmonic character you're going for before investing further time developing it. Every chord placed into a progression links directly to its own dedicated page, where the full fingerings (guitar and ukulele) or keyboard voicings (piano) already documented for that chord are available immediately — the builder's role is assembling and previewing the overall progression; each individual chord's own page covers the specific physical playing information needed to actually perform it. Exporting a built progression, once complete, gives you a portable record of the chord sequence you've assembled — genuinely useful for taking a progression worked out using the tool into an actual practice session, songwriting session, or rehearsal without needing to re-enter or re-derive it from scratch. Combining the progression builder with the Chord Progression Transposer extends its usefulness directly: build a progression once, in whichever key feels easiest to work out initially, then transpose the finished result to whatever key actually suits a vocalist or a specific instrument's comfortable range — a genuinely practical workflow that separates the creative work of choosing a progression's shape from the largely mechanical work of finding its ideal final key. Testing substitutions and variations directly within a built progression is a real, practical use of the tool worth naming explicitly: swap a single chord for a functional equivalent (a vi in place of a I, a tritone substitution in place of a dominant 7th — Chord Substitution covers both techniques in depth) and listen to the immediate playback difference, a fast, low-effort way to evaluate a substitution's actual effect before committing to it in a real arrangement. Instrument-specific playback is supported directly, letting a built progression be previewed using guitar, piano, or ukulele voicings interchangeably — genuinely useful for a songwriter deciding which instrument best suits a given progression's character, or for confirming that a progression built with piano voicings in mind will still sound coherent once adapted to guitar or ukulele's own available shapes. Sharing a built progression, once exported, gives a bandmate, student, or collaborator immediate access to the identical chord sequence without them needing to re-derive it from a description or an audio recording — a direct, practical extension of the tool's core purpose: making a chord progression's real, playable structure genuinely easy to build, hear, and pass along. Section-based structure — verse, chorus, bridge, and other common song sections, each potentially using a different progression — is supported directly, letting you assemble a complete song's full harmonic structure rather than only a single short repeating loop, then play back and review the transitions between sections specifically, since how one section's final chord moves into the next section's opening chord is often just as musically important as the internal logic of either section considered alone. Comparing two candidate progressions side by side for the same section of a song is a genuinely common, practical songwriting use of the tool: build both options, play each back in turn, and evaluate directly which better serves the song's intended mood or matches the melody already in mind — a fast, low-friction way to make a real creative decision that would otherwise require picking up an instrument and playing through each option manually multiple times. Every functional and substitution concept referenced throughout this page — tonic, subdominant, dominant function (Chord Function), diatonic chord sets (Diatonic Chords), and the substitution techniques covered in Chord Substitution — is available to apply directly and immediately within the builder rather than remaining abstract theory read on a separate page, closing the loop between understanding why a progression works and actually hearing it built and played back in real time. Whether the goal is finishing a new song, learning an existing progression by ear, or simply exploring how a handful of chords fit together, the builder is meant as a genuinely practical bridge between this site's theory content and an actual, playable musical result you can hear immediately rather than only imagine or read about in the abstract, built directly from the same real, genuinely-authored chord data this entire site relies on.

FAQ

Does the progression builder only work with common, simple chords?

No — it draws from this site's full documented chord roster across all three instruments, including extended and altered chords, not just the most basic open triads. Any chord with its own page on this site is available to use in a built progression.

Can I build a progression by scale degree instead of picking specific chord names?

Yes — choosing a key and building by Roman numeral or scale degree (I, IV, V, and so on) lets the tool fill in the correct actual chords for that key automatically, based on the diatonic-chord logic covered in Diatonic Chords.

Where do I find the actual fingerings for chords in my built progression?

Every chord in a built progression links directly to its own dedicated page on this site, which documents the full guitar, piano, and ukulele fingerings and voicings for that specific chord.