Learn harmony
Learn Guitar Harmony Online, Step by Step
Harmony explains how chords are built, how they function in a progression and which notes connect them. GuitarHarmonyLab links those concepts to the fretboard and to a chord chart you choose, so the theory can become a concrete guitar exercise.
The approach
Theory you can see and play
Instead of studying every concept in isolation, begin with a real progression. Examine its chords and functions, locate useful notes on the neck, then turn selected material into a playable exercise or Practice Card.
Why guitar harmony is useful
Harmony gives you a framework for understanding why chords sound stable, tense or connected. It can help you transpose a progression, choose notes for improvisation, compare possible substitutions and analyse a song’s structure. These skills still require listening and practice; the theory explains the relationships you are training your ear and hands to recognise.
What you will learn
How chords are built
Triads, seventh chords, extensions — and how to find them anywhere on the neck.
Which scales fit
Real chord-scale relationships, not one-size-fits-all boxes.
How chords connect
Functions and guide tones that make progressions like the ii-V-I make sense.
How to improvise
Build phrases that target chord tones and respond to the changes instead of only running through a scale shape.
A visual-first method
Voice leading and harmonic function are established ways to study how chords connect — see this Berklee overview of voice leading. Standard notation remains useful, but guitarists also need to locate those relationships on six strings. GuitarHarmonyLab presents the relevant notes on its verified fretboard, where they can be turned into guitar-specific practice.
For independent study and guitar lessons
An independent guitarist can use the app to investigate the harmony behind a chart and build a focused practice task. During a lesson, a teacher can explain the musical choice, then use Teacher Studio to organize the student’s material, assign an exercise and prepare a PDF handout. The software supports that teaching relationship; it does not replace the teacher’s listening, feedback or musical judgment.
Your learning path
You can start with a progression you are already practising. Identify its tonal centre when the chords support one, study the role of each chord, then choose a manageable fretboard task. The harmony courses and level system help organize the material without pretending that every chart has one automatic or definitive interpretation.
From a chart to a practice exercise
Import a clear JPEG, PNG or PDF of a chord chart, verify the detected chords, then launch the analysis. You can examine the proposed tonal centre, locate relevant chord and scale notes on the neck, and keep selected work as Practice Cards. When a chart is harmonically ambiguous, you remain responsible for confirming the context.
Free Starter
Explore harmony from your own chart
Start with Free Starter, import a progression and turn its harmonic relationships into work you can see and play on the neck.