Natural notes and the two half steps

Western music — the local tradition your tutor is here to study — spells its notes with just seven letters. This lesson gives you the letters, the spacing rules, and one string fully mapped.

The musical alphabet

The note names are A B C D E F G, and after G it wraps back to A. That’s the whole alphabet. These seven are called the natural notes — the white keys on a piano, and the only notes you’ll name for now.

(The frets you’ll skip over in a moment have names too — sharps and flats — but they can wait. Naturals first.)

Whole steps and half steps

On a guitar, distance is measured in frets:

• A half step = 1 fret. The smallest move the instrument makes.
• A whole step = 2 frets.

Here is the rule that makes the fretboard knowable:

Natural notes are a whole step (2 frets) apart — except B to C and E to F, which are a half step (1 fret) apart.

The two odd pairs

B–C and E–F are the only natural neighbors with no note between them. Memory hook: no fret sits between B and C, and none between E and F — they’re touching. Every other pair (A–B, C–D, D–E, F–G, G–A) has one skipped fret between them.

If you remember exactly one fact from this course, make it this one. It’s the reason the map below looks the way it does, and later it’s the reason scales and keys look the way they do.

Walking the low E string

Start on the open low E string and apply the rules. E to F is a half step, so F is at fret 1. F to G is a whole step: fret 3. And so on, up to the 12-fret repeat:

fret:  0   1   2   3   4   5   6   7   8   9   10  11  12
note:  E   F   .   G   .   A   .   B   C   .   D   .   E

Read the gaps: one fret between most neighbors, but F hugging the open E, and C hugging B. The dots are the sharps and flats you’re skipping for now.

Notice the landmarks lining up with your fret markers: G at the 3rd-fret dot, A at the 5th, B at the 7th, D at the 10th… wait — the dot is at 9, and D is at 10. Close, but don’t trust the dots blindly; trust the rule.

Try it

1. Play up the low E string, natural notes only — frets 0, 1, 3, 5, 7, 8, 10, 12 — saying each name out loud: “E, F, G, A, B, C, D, E.”
2. Come back down, still naming: “E, D, C, B, A, G, F, E.”
3. Notice the two places your finger moved only one fret. Those are your half steps.

Do this once a day until it’s boring. Boring means learned. The same walk works from any string’s open note — the rules don’t change, only the starting letter.