Octave shapes — connect the whole neck

The four useful shapes

Use these to jump from any known note to the same note in another octave.

Shape A — “2 strings up, 2 frets right”

Use when both strings are below the B string (i.e. between the E↔D, A↔G).

o . . .       (target)
. . . .
. . . .
x . . .       (start)

Example: start on fret 5 of the low E (A). Target = fret 7 of the D string = A, one octave up.

Shape B — “2 strings up, 3 frets right”

Use when crossing the B string (between G↔B, or D↔high E).

o . . . .     (target)
. . . . .
. . . . .
x . . . .     (start)

Example: start on fret 5 of the D string (G). Target = fret 8 of the B string = G, one octave up.

Shape C — “3 strings up, 2 frets back”

Same octave, different string set. Useful for instantly finding the unison.

Shape D — “1 string up, 7 frets right”

Slower but useful: same note one octave up by sliding within close range.

Mapping a single note

Let’s map every A on the fretboard. Start with the open A string. From there:

1. Fret 12, A string — one octave up.
2. Fret 5, low E string — same A as open A string.
3. Fret 7, D string — A, octave above open A.
4. Fret 2, G string — A, same octave as fret 7 D.
5. Fret 10, B string — A, octave above fret 2 G.
6. Fret 5, high E string — A, two octaves above open A.

Look at the diagram and connect the dots in your head. You should see diagonal lines climbing from lower-left to upper-right. Once you see those diagonals, you’ve got it.

Why this beats memorisation

Memorising every note on every string is 6 × 12 = 72 facts. Memorising the natural notes on two strings + four octave shapes is roughly 20 facts. The lazy way is faster, and it tells you why the notes sit where they do — not just what they are.

Try this

Pick a random note (B, then D♯, then F, etc.). Without looking at any diagram, find it on all six strings between fret 0 and fret 12. Use only the anchor notes and octave shapes. Time yourself.