Circle of Fifths
Interactive music theory tool. Click any key to see adjacent keys, relative minor, Camelot codes, and key signature. Used by songwriters, producers, and DJs worldwide.
Outer ring: major keys. Inner ring: relative minor keys. Click any key.
C Major
relative minor: Am
Harmonically Compatible Keys
Camelot codes: adjacent numbers mix without clashing. A = minor, B = major.
Select Any Key
All 12 Keys Reference
| Major Key | Relative Minor | Key Signature | Camelot (Maj) | Camelot (Min) |
|---|---|---|---|---|
| C | Am | No accidentals | 8B | 8A |
| G | Em | 1# | 9B | 9A |
| D | Bm | 2# | 10B | 10A |
| A | F#m | 3# | 11B | 11A |
| E | C#m | 4# | 12B | 12A |
| B | G#m | 5# | 1B | 1A |
| F#/Gb | D#m/Ebm | 6#/6b | 2B | 2A |
| Db | Bbm | 5b | 3B | 3A |
| Ab | Fm | 4b | 4B | 4A |
| Eb | Cm | 3b | 5B | 5A |
| Bb | Gm | 2b | 6B | 6A |
| F | Dm | 1b | 7B | 7A |
How to Read the Circle of Fifths
Clockwise = Add a Sharp
Each step clockwise adds one sharp and moves up a perfect fifth. C has zero sharps, G has one (F#), D has two (F# and C#), and so on. The order of sharps is F, C, G, D, A, E, B.
Counter-Clockwise = Add a Flat
Each step counter-clockwise adds one flat and moves down a perfect fifth. C has zero flats, F has one (Bb), Bb has two (Bb and Eb). The order of flats is B, E, A, D, G, C, F.
Outer = Major, Inner = Minor
The outer ring shows major keys. The inner ring shows relative minors. Every major key has a relative minor with the same key signature. C major and A minor share zero sharps or flats.
Adjacent Keys Mix Well
Keys that are one step apart on the circle share six of seven notes and mix naturally. C major (8B) flows easily into G major (9B) or F major (7B). This is the basis of harmonic mixing for DJs.
Camelot = Circle of Fifths
The Camelot Wheel used by DJs IS the Circle of Fifths with numbers. 8B is C major, 8A is A minor (its relative). 9B is G major (one step clockwise). Same numbers mix; adjacent numbers mix. The A/B suffix means minor/major.
Opposite = Most Different
Keys directly across the circle (a tritone apart) are maximally different. C and F#/Gb share only one note. Moving to the opposite key creates the most dramatic harmonic shift, useful for modulations in compositions.
Circle of Fifths for Songwriters
Finding Chord Progressions
The diatonic chords of any key follow a pattern (I, ii, iii, IV, V, vi, vii) that you can see on the circle. The IV and V chords of any key are directly adjacent, making I-IV-V the most natural progression in Western music.
- +C major (I) with F major (IV) and G major (V) are three adjacent keys
- +The vi chord (relative minor) is in the inner ring directly inside the I chord
- +Borrowing chords from parallel minor adds emotion (e.g., Cm in C major)
Modulating to a New Key
Modulation (key change) is most natural when moving to an adjacent key on the circle. Pivot chords exist in both keys. The closer two keys are on the circle, the smoother the modulation.
- +C to G (one step clockwise): share 6 of 7 notes, very smooth
- +C to its relative Am: same notes, instant emotional shift
- +C to Eb (3 steps): dramatic shift, used in dramatic bridge sections
For DJs and Producers: Circle of Fifths = Camelot Wheel
Perfect Mix (0 steps)
Same Camelot number, A to B or B to A. Example: 8A (Am) to 8B (C). Instant energy shift with no key clash.
Smooth Mix (+/-1 step)
One step clockwise or counter-clockwise. Example: 8B (C) to 9B (G) or 7B (F). Moves the energy up or down slightly.
Energy Boost (+7 steps)
The dominant key (one step clockwise in major/minor). Adds tension and drive. Classic DJ technique for the peak of a set.
Common Circle of Fifths Progressions
| Progression | Roman Numerals | In C Major | Feel | Famous Example |
|---|---|---|---|---|
| I - V - vi - IV | Tonic to Dominant to Relative Minor to Subdominant | C - G - Am - F | Uplifting, universal | Let It Be, Someone Like You |
| I - IV - V - I | Three adjacent circle keys | C - F - G - C | Classic, resolved | Twist and Shout, La Bamba |
| ii - V - I | Supertonic to Dominant to Tonic | Dm7 - G7 - Cmaj7 | Jazz resolution | Almost every jazz standard |
| vi - IV - I - V | Starts on relative minor | Am - F - C - G | Emotional, modern pop | Despacito, Frozen themes |
| Circle Progression | Moving through 5ths: V of V of V... | C - F - Bb - Eb - Ab... | Moving, restless | Autumn Leaves (partial) |
| I - vi - IV - V | 50s doo-wop progression | C - Am - F - G | Nostalgic, sweet | Stand By Me, Earth Angel |
Frequently Asked Questions
What is the Circle of Fifths?
The Circle of Fifths is a diagram showing all 12 musical keys arranged in a circle. Moving clockwise adds one sharp; moving counter-clockwise adds one flat. Each adjacent key is a perfect fifth apart. It is used by composers, producers, and DJs to understand key relationships, write chord progressions, and mix harmonically.
How do DJs use the Circle of Fifths?
DJs use the Circle of Fifths via the Camelot Wheel to find harmonically compatible keys for smooth transitions. Adjacent numbers mix without key clashes. The Camelot system is a numbered version of the Circle of Fifths: 8B is C major, 9B is G major (one step clockwise), 8A is A minor (the relative minor of C). The rules: same number mixes, +/-1 number mixes, same number switching A to B (or B to A) is an energy boost.
What keys are adjacent on the Circle of Fifths?
C major is adjacent to G major (one sharp, clockwise) and F major (one flat, counter-clockwise). The full clockwise sequence is: C, G, D, A, E, B, F#/Gb, Db, Ab, Eb, Bb, F, and back to C. Each clockwise step adds one sharp and raises the key by a perfect fifth.
What is a relative minor?
Every major key has a relative minor with the same key signature. The relative minor starts on the 6th degree of the major scale. C major and A minor share the same notes (no sharps or flats). G major and E minor share one sharp (F#). On the Circle of Fifths, the relative minor is shown in the inner ring directly inside its major key.
Detect What Key Your Track Is In
Upload any audio file to BeatKey and get the BPM, musical key, AND Camelot code instantly. Then use the Circle of Fifths to find compatible keys for your next track.
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