Every note on the fretboard, named.
A method for guitar and other string instruments, built on 12 notes, a few sums and one map.
Each row is a digit from 0 to 5 in 8-bit computer binary, and a fret on the E string: E F F♯ G G♯ A. Tap a row to hear it.
Artwork: Biel Escámez · Cobalto Studio
Chapters 2 · 8 · 11 · 14 · 19 · 20
Every note on the neck, for five instruments. Tap any note to hear it.
Chapters 3 · 7 · 13
Six characters, from the 6th string to the 1st.
Playable shapes across the neck, each within four frets.
Pick a chord and see it with every CAGED shape.
Chapters 3 · 7 · 13 · 19
Four characters, from the 4th string (G) to the 1st (A).
Playable shapes across the neck, each within four frets.
Pick a chord and see it with every FDCAG shape.
Chapters 6 · 9 · 10
Tap a key.
Harmony grid
Read down a column for a chord.
Chapters 4 · 12 · 17
Fill the boxes to make a strumming pattern.
Roman numerals or chord names.
Sound starts when you press a button.
GuitarMap · 2026
Revised second edition.
A simple approach to the fretboard and harmony; a powerful tool I wish I had when I started playing instruments.
Tap the circle to hear it turn through the twelve keys.
Artwork: Biel Escámez · Cobalto Studio
Contents
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