Interactive Chord Finder, Free Piano Scale and Chord Explorer
I built a free, browser-based tool for exploring scales, modes, and their diatonic chords. Pick any root note and scale (major, natural minor, all seven modes, and 70+ other scales) and instantly see which chords (triads, 7th, 9th, etc.) belong to that key. It also includes a built-in sequencer so if you've found interesting chords for your scale, you can arrange them into a progression and hear how they flow together. No need to switch between a theory reference and a DAW just to test whether a ii–V–I sounds right in your preferred scale. No signup, no ads, no paywall, just a tool I wished…
What it does
In the maker’s words, at launch
I built a free, browser-based tool for exploring scales, modes, and their diatonic chords. Pick any root note and scale (major, natural minor, all seven modes, and 70+ other scales) and instantly see which chords (triads, 7th, 9th, etc.) belong to that key. It also includes a built-in sequencer so if you've found interesting chords for your scale, you can arrange them into a progression and hear how they flow together. No need to switch between a theory reference and a DAW just to test whether a ii–V–I sounds right in your preferred scale. No signup, no ads, no paywall, just a tool I wished existed when I was learning music theory. There's also a growing collection of articles covering diatonic chords, seventh chords, modes, extended jazz harmony, and common progressions. Built with Hugo as a static site. Would love feedback from fellow musicians and music theory nerds.
Does the same job
all alternatives →- IMI made a tool for learning scales, chords, and how to combine themMay 2026 · projects.alesh.com · ▲36
This started out when I vibe-coded a guitar scale fingering generator. It came out pretty good, and I started adding stuff to it: chords, then how chords and scales interact. Then I added charts for other instruments I mess around with: piano, cello, alto recorder. There's a complexity toggle to go from basic harmony to extended/experimental stuff. It's honestly still mostly a toy, but I thought other people might be interested in playing with it. Source is on github, so it's easy enough to run locally and fork. https://github.com/aleshh/gtr-scales
- SHScale Heaven – Browse and play any scale/chord, chord progression2019 · scale-heaven.com · ▲231
- HWHarmopark – Web tool to visually build chords and progressions2019 · harmopark.app · ▲153
- KPKord – Python tool for displaying guitar chords/scales on your terminal2020 · github.com · ▲173
More growth this month
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