What Is an Online Chord Generator and How Do You Use One?
An online chord generator is a browser-based tool that produces chord progressions you can audition, edit, and export as MIDI. Chordico, for example, describes itself as "a sketch pad for writing chord progressions" where you can "save, share, and download MIDI chords for free." Use one when you want a fast harmonic starting point for a song, a practice loop, or a MIDI sketch to finish in a DAW — not when you need finished arrangements or mixed audio.
What a chord generator actually produces
A generator's output is harmonic raw material, not a finished track. Expect some combination of:
- Chord progressions — ordered sequences of chords (for example, a four-chord loop) built from a chosen key or scale.
- Voicings — how each chord's notes are stacked and spaced, which changes how the same progression feels.
- MIDI files — note data you can drag into a DAW and assign to any instrument.
Chordico's page evidence confirms the save/share/MIDI-export side. It does not document specific voicing controls, so treat voicing depth as something to verify in the tool itself.
How to use one, step by step
- Enable JavaScript. Chordico states plainly: "To use this app, enable JavaScript in your browser." If the page loads but nothing responds, this is the first thing to check.
- Choose a key or scale. This sets which chords are available and how "in" or "out" the result sounds. Major and minor are the usual starting points.
- Generate a progression. Let the tool propose a sequence, or build one chord at a time.
- Audition it. Play the loop back and listen for the moment a chord change lands wrong. Regenerate or swap individual chords rather than starting over.
- Rearrange and edit. Reorder chords, repeat a section, or hold one chord longer to shape phrasing.
- Save and share. Use the tool's save/share functions to keep a version or send it to a collaborator.
- Export MIDI. Download the progression and import it into your DAW, then assign instruments and build the arrangement around it.
Expected result: a MIDI clip of your progression sitting on a DAW track, ready to be voiced, orchestrated, and arranged.
Choosing between generating and writing by hand
| Dimension | Generator | Writing by hand |
|---|---|---|
| Speed to first idea | Fast — a loop in seconds | Slower, deliberate |
| Theory required | Low; the tool constrains choices | Higher; you supply the logic |
| Surprise factor | High; produces combinations you might not pick | Lower; tends to follow habits |
| Control | Bounded by the tool's options | Complete |
| Best for | Sketching, breaking writer's block, practice | Finishing, precise voice-leading, signature harmony |
A practical middle path: generate several progressions, keep the one or two that catch your ear, then edit them by hand so they stop sounding generic.
Common limitations to plan around
- JavaScript is mandatory. No JavaScript, no tool — this is the most common reason a browser-based generator appears broken.
- Free tiers may cap features. Chordico advertises free save, share, and MIDI download, but its page evidence does not detail any limits. Check the current interface before relying on it for a large project.
- MIDI is not audio. You get notes, not sound. Tones, mixing, and effects happen in your DAW.
- Generators favor common patterns. Output often leans on familiar progressions, so treat it as a first draft, not a finished composition.
When to reach for one
Use an online chord generator when you need a harmonic skeleton quickly, want to test how a key feels before committing, or need a MIDI loop to practice or produce over. Skip it when the harmony itself is the point of the piece and you need exact control over every voicing and resolution.