CHORD LAB

Guide Lessons

Platform tools, guides, AI assistant and recent updates — all in one place.

Post-launch

Open String Colouriser

Discover how open strings transform barre chord shapes into rich, resonant harmonic colours — sounds impossible to achieve any other way.

Post-launch

Substitution Factory

Every chord has harmonic alternatives — tritone substitutions, Coltrane changes, diminished pivots. The engine finds every valid option and shows you why it works.

Post-launch

Voice Leading Composer

A phrase-level DP solver that resolves four independent voices across an entire progression — finding the smoothest path through every chord change automatically.

Post-launch

Improv Lab

Instant scale and mode recommendations for any chord or progression — Dorian, Mixolydian, Altered and beyond — with fretboard positions shown in real time.

Everything you need to play better

Every app. A lifetime of theory. One platform.

£9.99 / month

Founding member rate — first 200 only

Become a founding member