Theory you can click on.
Reading about music theory only gets you so far. These do the looking-up for you, so you can spend the time playing instead.
Free · no account · nothing to install
Four tools, three of them ready
Everything runs in your browser. Nothing is stored, nothing is sent anywhere, and none of it asks for an email first.
Circle of fifths
Click any key for its signature, scale, relative minor and every chord that belongs to it — shown on the keyboard too.
Songwriting · key signatures · modulation
Open tool →Chord finder
Any root, any quality. The notes, the formula, and every place it sits on both a keyboard and a fretboard.
Learning chords · both instruments
Open tool →Metronome
Tap tempo, subdivisions, and a visual downbeat so you can see where the bar starts, not just hear it.
Practice · rhythm · timing
Open tool →Note reader drill
Sixty seconds a day until you stop counting lines. Random notes, instant feedback, no flashcards.
Sight reading · daily practice
Coming soonThey work together
One way to use all three in a sitting
Each tool answers a different question. Used in order, they take you from “what key is this?” to actually playing it in time.
Find the key
Work out a chord from the song, then look it up in the chord finder. It tells you which keys that chord belongs to.
Get the other chords
Take that key to the circle of fifths. It gives you the six chords most likely to appear alongside it.
Play it in time
Set the metronome slower than feels necessary, match the beats per bar, and build speed from clean.
The reading behind them
Tools are faster. Understanding lasts longer.
Music theory
Six steps, in order. Every tool here is a shortcut around something on that path.
Start →Piano
The keyboard is one repeating pattern. The chord finder shows you it, the hub explains it.
Piano lessons →Guitar
Why the same note sits in six places, and what that means for every shape you learn.
Guitar lessons →One lesson a week
Tuesdays, ten minutes, one idea
A short practical lesson in your inbox — with the exercise to go with it.