Show HN: Interactive Chord Finder, Free Piano Scale and Chord Explorer
interactivechordfinder.comI 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. A bit more on the sequencer: it's not meant for composing full songs, it's a scratchpad for testing chord progressions. You can adjust tempo, time signature, and note length to hear how a progression feels at different speeds and rhythms. If you change the scale or mode, you can. update the chords (click the update button) to reflect the new diatonic chords, so you can quickly A/B the same progression in, say, Ionian vs. Mixolydian. I have some ideas for what to add next like for instance PDF export with chords or MIDI export, but I'd rather hear what would actually be useful to you. What would make this tool part of your workflow? I've done a couple of updates to the app:
- added a transpose section
- improved readability by increasing contrast
- improved the chord sequencer (a.o. better metronome tone and rhythm)
- and many more "micro-tweaks" and improvements Nice one, I will link to this from Pianojacq.com if you're ok with that? Yes of course! Thanks for the link. I've added one more (major) feature: practice mode. I'll probably add a new post about this in a couple of days, but for those interested, you can already have a look here: https://interactivechordfinder.com/practice/