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Audio / Chord & scale lab
Chord & Scale Lab
Every chord that lives in a key, with the numerals producers talk in. Tap to hear them, stack a progression, loop it at tempo, then drag the MIDI into your DAW.
Diatonic chords
| Degree | Chord | Notes |
|---|
Progression
Add chords with ＋ above, or pick a preset.
About this tool
Chord & Scale Lab shows and plays every diatonic chord in any key and scale, labelled with Roman numerals and Camelot codes, so you can stop re-deriving which chords belong mid-session. Build a progression from presets or by hand with inversions and voicings, loop it at tempo, then export it as a MIDI file to drag into your DAW.
How to use it
- Pick a key and scale from the selectors.
- Tap chords to hear them, or choose a progression preset.
- Adjust inversions or voicings and loop the progression at tempo.
- Export the finished progression as a MIDI file.
FAQ
Is this free?
Yes — every feature here is free and unlimited.
Can I export MIDI without paying?
Yes — MIDI export is free; there's no Pro gate on this tool.
Is any audio uploaded?
No — everything is generated and played locally in your browser.
Does it show Roman numerals and Camelot codes?
Yes — both are shown for every diatonic chord, alongside inversion and voicing options.
The MIDI file has a Chords track and a root-note Bass track at the tempo shown, 480 ticks per beat. Presets switch the scale to major or minor when they need to; numerals follow the scale's own chord qualities, so a pentatonic "chord" is whatever stacking every other scale tone gives you.