Practice scales, chord inversions, and ear-to-eye recognition
A small, static toolkit built entirely with vanilla JavaScript ES modules — no build step, no server, works directly on GitHub Pages.
Try It
Click any key below to identify it and toggle its highlight. This is the same keyboard component every other page uses — here it's just free-play.
Where To Go Next
Scales
Pick a root note and major/minor, see the scale highlighted across the whole keyboard, root marked in the center.
Chord Inversions
Pick a root note, major/minor, and root/1st/2nd inversion, see the triad voiced and the root marked wherever it lands.
Quiz
A mystery scale or chord is highlighted with no labels — guess what it is, get instant feedback, and track your score.