Interactive tools
Piano tools
Play chords and scales on a live keyboard, explore the circle of fifths, keep time with a metronome, and train your ear. Everything runs right here in your browser.
Interactive piano
Click or tap the keys to play. Toggle note names to learn the layout.
Chord explorer
Pick a root and a chord type to see and hear it.
Chord progression player
Hear the progressions that power thousands of songs, in any key.
Scale explorer
Choose a root and scale to see and hear it, spelled correctly.
Circle of fifths
Click a key to hear it and see its signature and relative minor.
- Key signature
- 0
- Relative minor
- Am
- Accidentals
- No sharps or flats
Transposer
Move a chord or scale to a new key, spelled correctly.
Metronome
Practise in time with a steady, accurate click.
Tap tempo
Tap the beat of any song to find its BPM.
Interval ear trainer
Listen, then name the interval. Train the core skill behind playing by ear.
You will hear two notes. Identify the distance between them.
Want feedback on your real playing?
These tools teach the theory. Harmono listens to your own piano and shows you exactly what to fix next.