Triads Across the Fretboard

Start with Strings 1, 2 and 3

Because triads use only three notes, we can play them across groups of three adjacent strings. We’ll begin on strings 1, 2 and 3, where the shapes are easy to see and hear clearly.

Once these shapes are familiar, the same ideas can be applied to the other adjacent string sets later in the lesson.

• 1–2–3
• 2–3–4
• 3–4–5
• 4–5–6

For now, staying on one string set lets us focus on how the order of the notes changes from one inversion to the next.

The four diagrams below use C major to show how the same root-position triad can be played on each adjacent three-string set. These are simply movable major-triad shapes, so once you know where the root sits in each shape, you can move the whole shape up or down the fretboard to play any other major triad.

C Major Root Position Across Four String Sets

Root Position and Inversions

Major and Minor Triads

Major and minor triads share the same root and 5th.

Only the 3rd changes.

A major triad contains a major 3rd.

A minor triad contains a minor 3rd.

This means that once you know a major triad shape, you can identify which note is the 3rd and lower it by one fret to create the minor version.

For example, C major is C – E – G, while C minor is C – E♭ – G.

The same principle applies in root position and in both inversions.

This is much more useful than treating major and minor shapes as completely separate patterns. The more clearly you can identify the function of each note inside the shape, the less memorisation is required.

Major to minor across all three inversions

C Minor Across Strings 1–2–3

             Root       1st inv.      2nd inv.      Root + octave
1 e|-----------3-----------8------------11------------15---|
2 B|-----------4-----------8------------13------------16---|
3 G|-----------5-----------8------------12------------17---|
4 D|-----------x-----------x-------------x-------------x---|
5 A|-----------x-----------x-------------x-------------x---|
6 E|-----------x-----------x-------------x-------------x---|

Connecting Triads Through Inversions

Why Use Different Triad Inversions?

Different inversions give us more than alternative ways to play the same chord.

By choosing particular voicings, we can reduce unnecessary movement between chords, create melodies through the highest notes, and play in different areas of the fretboard without changing the underlying progression.

For example, playing C → F → G → C using different inversions can produce a rising melody, a descending melody, or a sequence where certain notes remain unchanged.

This gives us control over how a chord progression sounds, rather than simply which chords we’re playing. As you work through the examples, listen closely to the highest note of each chord and how it moves.

Let’s apply the shapes we’ve learned to a simple chord progression:

C major → F major → G major → C major

We could play every chord in root position, but that would involve moving between shapes spread across the fretboard.

Instead, we can use inversions to keep the chords closer together.

Try the following shapes on strings 3, 2 and 1:

Notice how little movement is required.

Between C major and F major, the note C remains in the same position while E moves up to F and G moves up to A.

When we move from F major to G major, all three notes move to nearby positions.

This is an example of voice leading: choosing chord voicings based on how smoothly their individual notes connect.

Try playing the progression slowly, paying attention to the movement of each note rather than thinking of the chords as separate shapes.

Then experiment with other inversions of the same chords. You should find several ways to play the progression, each with a slightly different sound and amount of movement.

Here are two more routes to try on the same three strings:

The Same Triad on Other String Sets

So far, we’ve explored major and minor triads in root position, first inversion and second inversion using strings 1, 2 and 3.

However, these triads aren’t limited to the top three strings. We can apply exactly the same principles to other groups of three adjacent strings:

• Strings 2, 3 and 4
• Strings 3, 4 and 5
• Strings 4, 5 and 6

Each string set offers another way to play the same triad, although the fingering and shape will change depending on the tuning of the strings involved.

For example, a C major triad still contains C, E and G, regardless of which strings we use to play it. We can find its root position, first inversion and second inversion on each string set, just as we did on strings 1, 2 and 3.

Moving between string sets also changes the register of the chord. Triads played on the higher strings generally sound brighter and more prominent, while those played on the lower strings have a deeper, fuller character.

This gives us greater flexibility when playing. We can choose a triad based on where we are on the fretboard, how we want the chord to sound, or how it fits alongside other instruments.

Major Triad on Strings 2–3–4 — Example: C major

Minor Triad on Strings 2–3–4 — Example: C minor

Major Triad on Strings 3–4–5 — Example: C major

Minor Triad on Strings 3–4–5 — Example: C minor

Major Triad on Strings 4–5–6 — Example: C major

Minor Triad on Strings 4–5–6 — Example: C minor

Using Triads in Real Guitar Parts

Now that we’ve explored major and minor triads, their inversions and how they can be played across different string sets, we can begin to think about how to use them in actual music.

Triads aren’t intended to replace open chords or barre chords. They simply give us more options when deciding how to play a chord.

For example, a full six-string chord can provide a rich, powerful sound, but that isn’t always what a piece of music needs. A three-note triad can produce a lighter, more focused sound, particularly when playing alongside a bass guitar, keyboard or another guitarist.

Triads are especially useful for:

• Rhythm guitar: Playing smaller chord shapes higher up the neck.
• Playing with other instruments: Finding space in an arrangement without unnecessarily doubling the lower notes.
• Chord accents: Adding short, distinctive chord stabs and rhythmic embellishments.
• Melodic movement: Using different inversions to create melodies within a chord progression.
• Voice leading: Connecting chords smoothly by choosing shapes that minimise movement between individual notes.

The important thing to recognise is that knowing several ways to play the same chord gives us greater control over how a piece of music sounds.

We are no longer restricted to a handful of familiar chord shapes. We can choose where to play a chord, which notes sit at the top of the voicing, and how those notes move as the harmony changes.

What’s Next?

In the next lesson, we’ll put these ideas into practice by using triads to create more interesting guitar parts.

We’ll explore how to take a simple chord progression and develop it using different inversions, rhythmic patterns and melodic movement between chord shapes.