Interactive Circle of Fifths
The fundamental roadmap of Western musical harmony. Explore key signatures, relative minors, and diatonic chord progressions.
How to Use the Circle of Fifths to Write Songs
The Circle of Fifths is the musician's visual roadmap of harmony. It arranges all twelve musical keys like the numbers on a clock face. Moving clockwise moves up by musical fifths, adding one sharp (♯) to the key signature at each step. Moving counter-clockwise moves by fourths, adding one flat (♭). Every major key also pairs directly with its inner relative minor key that shares the exact same notes.
| Clock Position | Major Key | Relative Minor | Key Signature | Sharps / Flats Added |
|---|---|---|---|---|
| 12:00 | C Major | A minor | All Natural (No Sharps/Flats) | — |
| 1:00 | G Major | E minor | 1 Sharp | F# |
| 2:00 | D Major | B minor | 2 Sharps | F#, C# |
| 3:00 | A Major | F# minor | 3 Sharps | F#, C#, G# |
| 4:00 | E Major | C# minor | 4 Sharps | F#, C#, G#, D# |
| 5:00 | B Major | G# minor | 5 Sharps | F#, C#, G#, D#, A# |
| 6:00 | F# / Gb | D#m / Ebm | 6 Sharps or 6 Flats | Enharmonic crossover key |
| 7:00 | Db Major | Bb minor | 5 Flats | Bb, Eb, Ab, Db, Gb |
| 8:00 | Ab Major | F minor | 4 Flats | Bb, Eb, Ab, Db |
| 9:00 | Eb Major | C minor | 3 Flats | Bb, Eb, Ab |
| 10:00 | Bb Major | G minor | 2 Flats | Bb, Eb |
| 11:00 | F Major | D minor | 1 Flat | Bb |
Keys sitting right next to each other on the circle share six out of seven notes. For example, C Major and G Major share C, D, E, G, A, and B — the only difference is F versus F#. Because they share almost the entire scale, moving between neighboring keys during a song bridge sounds completely natural and satisfying.
Finding Chords That Naturally Fit Together
Pick any key on the circle: the chord directly to its right is the V (dominant) chord, the chord to its left is the IV (subdominant) chord, and the chords on the inner ring are your relative minors (vi, ii, iii). These six adjacent sectors form your complete primary chord family — thousands of famous hit songs are built entirely from these neighboring chords!
Borrowing Chords for Emotional Flavor
Once you master the standard chords in a key, you can borrow a chord from the parallel minor key (for example, sliding an Fm chord into a C Major song). This minor-fourth "secret weapon" is famous in classic Beatles songs, film soundtracks, and modern indie music to add an instant touch of nostalgia.
Frequently Asked Questions
Keys that sit right next to each other on the circle share almost all the same notes. If you are writing a song in C Major, its neighboring chords (F and G Major, along with A, D, and E minor) will almost always sound great together in a chord progression.
Moving clockwise steps up by a musical fifth (7 semitones), which adds one sharp to preserve the major scale formula. Moving counter-clockwise steps down by a fifth, adding one flat per step.
The outer circle displays Major keys (bright and uplifting), while the inner circle shows their Relative Minor keys (moody and reflective). Each outer key and its inner partner share the exact same key signature and scale notes.