Theory tool
Interactive Circle of Fifths
Explore key signatures, correctly spelled major scales, relative minors, neighboring fifths, and diatonic harmony. Audio uses smooth root-position voicings so the theory is easier to hear.
Cmajor
Selected key
C major
No sharps or flats
Scale
C · D · E · F · G · A · B
Relative minor
A minor
Closest neighbors
IV: F major · V: G major
CI · C–E–GDmii · D–F–AEmiii · E–G–BFIV · F–A–CGV · G–B–DAmvi · A–C–EB°vii° · B–D–F
How StaveWave keeps this accurate
Each major scale is spelled diatonically with seven consecutive letter names, then the diatonic triads are built from those scale degrees. Displayed names and audio pitch classes come from the same chord objects; octave placement changes voicing only.