PLAY · LISTEN · DISCOVER88 piano keys · 120 chords · Free
KEYS · SCALES · HARMONY

Know the key.
Find your sound.

Explore 24 major and natural-minor scales, hear the notes and discover the seven chords that belong to each key. All interactive, free and browser-only.

Explore a scale

C major scale

C1
D2
E3
F4
G5
A6
B7
Choose a key or tap a piano key to hear a note.

Understand this key

The C major scale has no sharps or flats. Its seven notes form the chords shown below.

Relative key: A minor

Step pattern: W – W – H – W – W – W – H

W means a whole step (two semitones). H means a half step (one semitone). The minor mode on this page is natural minor, not harmonic or melodic minor.

Seven diatonic triads

Build a three-note chord on each degree using only the notes of the chosen scale. Press Play to hear it; the Roman numeral shows its role in the key.

  1. I — CC · E · GTriad
  2. ii — DmD · F · ATriad
  3. iii — EmE · G · BTriad
  4. IV — FF · A · CTriad
  5. V — GG · B · DTriad
  6. vi — AmA · C · ETriad
  7. vii° — BdimB · D · FTriad

How to practice scales

Start with the tonic, play each note up one octave, then descend. Notice the two half-step gaps in a major scale (3–4 and 7–1), and the distinctive natural-minor pattern (2–3 and 5–6). Try a three-note chord on the first, fourth and fifth degrees to hear how a key creates harmony.

We publish only two learning tools here, rather than automatically creating dozens of near-identical SEO pages. Each scale and chord is still fully playable without registration.