Guitar theory lessons

The Ruler

One collection, several routes

A position is a way to reach notes; it is not another scale.

Take the guided lesson

Start with a small region

This view shows G-major notes in frets 0–4 only. Find a G, then a nearby A and B. You are navigating note relationships, not memorizing every dot at once.

0
1
2
3 •
4
5 •
6
7 •
8
9 •
10
11
12 •

On the low E string, G is fret 3. A can be the open A string and B its fret 2.

Crossing strings changes the route, not the degrees

The scale recipe counts pitch distance. On one string that distance is a fret count; crossing strings adds the tuning interval. Use note names and the root anchors from Section 1 to check your route.

Do not copy the same geometric move across the G–B pair without checking it. That pair is tuned differently from the neighboring pairs.

Find the same degrees in another region

Now the G-major collection appears in frets 7–11 with degree labels. Find 1, 2, and 3 again. Moving to this region changes register and fingering; the key is still G major.

0
1
2
3 •
4
5 •
6
7 •
8
9 •
10
11
12 •
E
B
G
D
A
E

G appears on the B string at fret 8. Look for degrees 2 and 3 nearby.

Find it on the neck

Find G, B, and D in the collection

Locate these three named notes anywhere on the neck. This checks pitch-class locations, not a particular fingering or performance speed.

0 of 3 foundGBD
0
1
2
3 •
4
5 •
6
7 •
8
9 •
10
11
12 •
E
B
G
D
A
E

Click the notes anywhere on the neck.

Check yourself

You move a G-major phrase to a higher register but keep its note names. What changed?

What to keep

Takeaways

  • A position maps the collection into a playable region.
  • Connect root anchors before linking larger patterns.