Key & scale explorer
Key signature and staff accidentals; scale tones use a ring around the note name and the degree sits below, outside the ring.
C major
Scale on tonic C — Major (Ionian)
Circle of fifths
Tonic (circle + degree 1 below)Other scale degrees (2–7)Not in scale (no ring)
Clockwise adds a perfect fifth. Click a key to match the Key dropdown; enharmonic keys (e.g. C♯ / D♭) share one position.
Chords
Diatonic triads
Built on each degree of C · Major (Ionian) · Tap a chord to hear it and choose it for the piano when highlight is set to “Selected chord”.
Coming soon
Key & scale explorerLive
Key signatures on the staff plus scale degrees and note names on the piano.
Chord progressionsLive
Switch to Progressions mode in the chords section to build custom voicings and hear them flow.
Interval Trainer
Interactive exercises and ear training.