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