Explore key signatures, audition playable diatonic chords in real time, map seamless key modulation paths, and uncover modal interchange borrowed chords used in iconic rock songs.
All 7 diatonic chords generated naturally from the C Major scale notes.
Listen to how these diatonic chords link into iconic songwriting cadences.
The fundamental harmonic pillar of Western music.
Used in hundreds of iconic hits from Journey to Green Day.
Classic retro ballad progression with smooth voice leading.
The essential building block of jazz standards and smooth progressions.
Moving clockwise adds one sharp (or subtracts one flat), shifting to the Dominant key (V). Moving counter-clockwise adds one flat, shifting to the Subdominant key (IV).
Every major key shares its exact notes and key signature with its relative minor, located three semitones down on the inner ring.
Notice how the most famous chord progressions in popular music (I - IV - V, I - vi - IV - V, ii - V - I) form tight triangular clusters directly on the wheel.
Get our complete 3-page reference guide with the 12-fret note map, universal interval formulas, 7 modes matrix, and CAGED pentatonic boxes. Perfect for your music stand.
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Check out the Chord Progression Jam Player or the CAGED System Visualizer.