The Chromatic Scale
Every fret, every note, the 12-note system
The 12 Notes
All of Western music uses just 12 notes, arranged in a repeating cycle:
C — C# — D — D# — E — F — F# — G — G# — A — A# — B — then back to C
Each step between adjacent notes is a semitone (or half step). On guitar, one semitone = one fret. So if you start on any fret and move up one fret, you've gone up one semitone.
Two semitones make a tone (or whole step) — that's two frets.
The chromatic scale uses all 12 notes in order. It's not a musical scale you'd normally play over a song, but understanding it is essential because every other scale is built by selecting specific notes from these 12.
Sharps and Flats
Notice that some notes have a # symbol — this means "sharp" (raised by a semitone). The same note can also be called "flat" (â™), meaning lowered from the next note:
C# = Dâ™ (same note, two names)
D# = Eâ™
F# = Gâ™
G# = Aâ™
A# = Bâ™
Notice there's no sharp/flat between E-F and B-C — these pairs are already one semitone apart naturally. This is one of those quirks you just have to memorise.
The Chromatic Scale on Guitar
Every fret on every string moves up by one semitone. This means:
String 6, open = E
String 6, fret 1 = F
String 6, fret 2 = F#
String 6, fret 3 = G
...and so on up to fret 12, where you reach E again (one octave higher).
The pattern then repeats from fret 12 onward. Fret 12 is always the same note as the open string, one octave higher. This is why guitars have a double dot marker at fret 12.
Tab Examples
Chromatic scale on string 6 (open to fret 12)
e-------------------------------------------------- B-------------------------------------------------- G-------------------------------------------------- D-------------------------------------------------- A-------------------------------------------------- E--0--1--2--3--4--5--6--7--8--9--10--11--12--------
Chromatic exercise across strings (1-finger-per-fret)
e----------------------------------1--2--3--4-- B---------------------------1--2--3--4---------- G--------------------1--2--3--4----------------- D-------------1--2--3--4------------------------ A------1--2--3--4------------------------------- E--1--2--3--4-----------------------------------
Tips
- No sharp between E-F and B-C — these are the two "natural semitones"
- Fret 12 = same note as open string, one octave higher
- Learning the notes on strings 6 and 5 is highest priority — it unlocks power chords, barre chords, and root notes
- Use the phrase "Every Fret Is A Semitone" to remember the guitar's layout
Practice Exercises
- Play the chromatic scale on string 6 from open to fret 12, saying each note name aloud
- Do the same on string 5 (A, A#, B, C, C#, D, D#, E, F, F#, G, G#, A)
- Play the cross-string chromatic exercise as a daily warm-up
- Quiz yourself: what note is on string 6 fret 5? String 5 fret 3? String 6 fret 8?