Music theory definition
Circle of fifths
All twelve keys arranged so each neighbour is a perfect 5th away and differs by one sharp or flat.
A clock of keys
The : clockwise adds a , counter-clockwise adds a .
Learn it in context
This term is introduced in Unit 6: Keys. Work through the explanations and exercises to connect the definition with music.
- The circle of fifths
A map of every key and how they connect.
Explore with an interactive tool
- Circle of fifths
Every key, arranged so neighbours share all but one note. Tap a key to turn the circle, see its signature, and hear its chords.
Related music terms
- Key
- The set of notes (and the tonic) a piece is built around, like C major or A minor.
- Key signature
- The sharps or flats at the start of each line, telling you which notes to play sharp or flat throughout.
- Relative key
- A major and minor key that share a key signature, like C major and A minor.
- Parallel key
- A major and minor key that share a tonic, like C major and C minor.