Undercover Zest — Guitar Chord Progression Builder

Build chord progressions in any key, visualise scales on the fretboard, use the built-in tuner and arpeggiator.

Part of the Undercover Zest songwriting suite.

About this tool

Guitar Chord Progression Builder

Build chord progressions in any key. Every diatonic chord in every major and minor key, laid out as a grid you can play and arrange — with a fretboard scale visualiser, sampled guitar playback, arpeggiator, chromatic tuner, key finder and chord picker. Free, browser-based, no sign-up.

Part of the Undercover Zest songwriting suite — find lyrics with RhymeForge, build metaphors with CollisionLab.

Click chords to build a progression...

Select a chord

Click a chord to see theory tips, voicings, and voice leading advice.

♫ Lyrics

♫ RhymeForge

Guitar Chord Progression Builder

Undercover Zest

Quick start

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