What is the Circle of Fifths and why is it essential for guitarists?

The Circle of Fifths is a visual map connecting 12 musical tones by intervals of perfect fifths. It helps guitarists understand key relationships, chord families, transposition, and harmonious capo placement.

How do you determine the chords of a song using the Circle of Fifths?

Select the song key on the Circle of Fifths wheel. The six grouped chords (tonic, subdominant, dominant, and their 3 relative minors) form the most commonly used chords in that song.

Music Hub / Circle of Fifths

Interactive Circle of Fifths Audio Synth

Visual harmony compass & acoustic guitar pluck simulator. Find perfectly matching chords, transpose vocal pitches, discover optimal capo positions, and explore song progressions interactively.

library_music 24 Keys

explore Visual Tonal Compass

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How to use: Click a note on the outer ring (e.g. ) to hear the pluck and view its 6 companion chords in the adjacent panel.

I Tonic

IV/V Sub & Dom

ii/iii/vi Minor

vii° Dim

Quick Access:

Scale Major

Relative Minor: • Dominant:

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Scale Notes:

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Guitar Fretboard & Scale Box

Key •

Root (Key) Scale Note Blue Note

Click note dot to hear pluck

Open (0)

3 •

5 •

7 •

9 •

12 :

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Capo Recommendations & Chord Shapes

Open Shapes

Use the following Capo positions to play songs in the key of with easy open-chord shapes without barre chords:

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Harmonic Modulation & Transition Radar

Circle Steps

Most harmonious key change (song modulation) map from Major:

7 Diatonic Chord Family ()

Harmonious Chords Cheat Sheet

A set of 6 companion chords that are 100% harmonious and most commonly used together in a song. Click the speaker button to hear each sound.

lightbulb 6-Chord Neighbor Harmony Rule

On the Circle of Fifths, chord (IV) is immediately to the left (Subdominant), and chord (V) is immediately to the right (Dominant). The three chords on the inner ring are their relative minors: , , and . These six chords form the foundation of over 90% of popular songs.

Geometric Progression Shapes & Patterns

Songwriting Inspiration

Chord progression patterns of world-famous songs (Pop, Ballad, Blues, Jazz) for arrangement reference and songwriting in the key of .

Song Chord Order:

Key

Secondary Dominants & Borrowed Chords

Advanced Spice Chords

Spice chords and harmonic variations beyond the root scale to add deep emotional dynamics to your chorus or bridge.

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Secondary Dominants

The 5th dominant chord of the target chord. Strongly pulls the listener's ear before resolving to the destination chord.

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Borrowed Chords (Modal Mixture)

Chords borrowed from the parallel minor scale ( Minor) for poetic and cinematic nuances.

7 Scale Modes (Greek Modes)

Character & Emotional Mood

Explore modal emotional colors (cheerful Ionian, funky/jazzy Dorian, melancholic Aeolian, mystical/flamenco Phrygian) in the key of Major.

Scale Comparator, Smart Transposer & Capo

A/B Engine

A practical tool to match song pitch with a singer's vocal range and find optimal capo positions to avoid barre chords.

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Scale Modulation Comparison (A/B)

Original Key (Key A): Key A

Target Key (Key B): Key B

Interval Distance:

Capo Recommendations:

Chord shapes in Key sound in Key

Pivot Chords (Shared Chords):

No shared diatonic chords

transform Custom Chord Sequence Transposer

Enter Source Chords (Separated by Space):

Target Key:

Transposition Result (Key ):

Songs & Artists in Key of

Explore popular hit songs and artists composing in the key of Major.

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Artists Frequently Using This Key:

Theory Guide: How to Use the Circle of Fifths school

1. What is the Circle of Fifths?

The Circle of Fifths is a geometric map of the 12 chromatic tones in Western music organized by intervals of perfect fifths (7 semitones). Moving clockwise adds sharps (♯), while counter-clockwise adds flats (♭).

2. How to Memorize Sharps (♯) and Flats (♭) Order

• Order of Sharps (♯): F - C - G - D - A - E - B (Mnemonic: Father Charles Goes Down And Ends Battle).
• Order of Flats (♭): B - E - A - D - G - C - F (Mnemonic: Battle Ends And Down Goes Charles\' Father).

3. How to Find Guaranteed Harmonious Chords for Songwriting

Select a root key (e.g. Key of G). Look at the 2 adjacent chords (C and D) and the 3 inner-ring chords (Em, Am, Bm). These 6 chords are guaranteed to sound harmonious without clashing because they share the same diatonic family.