Barre Chord Shape Relationships

So, let's tie it all together and finish off this course...

Barre chord root note relationships

Of the five main chord shapes we learned on this course (E, A, C, G and D)...

• The E and G shapes of the same chord share the same low E string root note
• The A and C shapes of the same chord share the same A string root note
• The D shape has it's own bass root note on the D string.

Let's take a look at these relationships more closely...

• E and G shapes

Tip: You don't have to play the full chord shapes - try cutting them down for more convenient fingering!

Notice how, when we're using the same chord for both shapes, the E shape ascends from that bass root note, and the G shape descends from that same root note on the low E string. There are higher root notes in these shapes, but we're just focusing on the lowest root notes as "marker points" at the moment.

Remember - that root note, positioned at a particular fret, determines the notation of the chord. For example, if it's positioned at fret 8 it would be the note C. Therefore, building either the E or G chord shapes onto that root note would make the basic chord a C chord. If you're playing the minor E or G shape, it'll be Cm. If you're playing the Major 7th E or G shape, it'll be Cmaj7. That initial letter always refers to the root note of the chord. That's partially why root notes are so important!

Since both chord shapes, when positioned at the same root note fret, offer different voicings of the same chord, it's down to you to choose which one suits the music you're trying to create. One shape might accommodate chords the other cannot. We won't go into the theory behind what makes the voicings different right now - just hear the difference!

• A and C shapes

So again, just like above, same root note and same chord, the A shape ascends from that root note position and the C shape descends from it.

• D shape and something you may have noticed...

We know from learning about the D shape chords, that they ascend from a D string root note. However, I've deliberately ignored the descending shape of the same root note. The reason? Well, take a look below and see if you notice anything familiar about the descending chord shape on the D string, starting with the basic major chord...

It merges with the E shape! See, that D string root note can also be seen as a higher root note (an octave higher to be specific) of the E shape's low E string root note, as indicated with the red dot above. Now, you may want to use the fuller E-shape, or you may just want that higher, top section of the E-shape. This is where your creative judgment takes over. I can't tell you which one is "right" or "wrong" to use in your own songwriting - I'm merely showing you the options you have.

Experiment with the descending D string shape, even descending it beyond the E-shape's "boundaries".

Identifying different voicings for the same chord

Because we've learned 5 main chord shapes, that essentially means we have 5 different voicings for any given chord. For example, if we were playing A7 (A dominant 7th) we could use:

1) Dominant E-shape with root note at fret 5 (fret 5 on low E string = A note)

Click the diagrams to hear

2) Dominant G-shape with root note, also at fret 5 (as we learned that G-shape and E-shape use the same low E string root note)

3) Dominant D-shape with root note at fret 7 (fret 7 on D string = A note)

4) Dominant C-shape with root note at fret 12 (fret 12 on A string = A note)

5) Dominant A-shape with root note at fret 12

Or we could just use the open A7 shape, which we know is what the A-shape above is based on...

Now, let's hear them all being played one after the other...

Click to hear >

So you can hear how the actual chord being played is the same with each shape, yet the voicing is different. That's what we're focusing on here - the ability to know the variations available to you and picking the one that best suits the music you want to create!

Try a similar exercise to above with different chords (e.g. Cm, Fmaj7 etc.). Refer back to the chord libraries in the previous barre chord lessons for chord ideas.

Getting C-A-G-E-D in

I don't want to get too in-depth with this right now, because there's going to be a whole series devoted to this "system". It's called the CAGED system, and you may notice that the 5 letters refer to the 5 chord shapes we've learned. Why C-A-G-E-D in that particular order? Well, apart from the convenient spelling, what it does is put these shapes into sequence on the fretboard. Let's take a look...

That diagram shows the E major chord across all the 5 main chord shapes we've learned. Look at the order of the sequence in which they appear...

• First we start with the good old open E major chord, which is effectively the E-shape with its low E string root note
• Next we move into the D-shape for the same E major chord
• Next we find the E major chord in the C-shape position at fret 7 on the A string
• Next we hit the A-shaped E major chord, right next door to the C-shape preceding it
• Finally, we end up at the G-shape for the same E major chord

Now, while the above particular sequence does not spell "CAGED" in that order, if we continued the sequence, we would find ourselves back at the E-shape, at the 12th fret (as the 12th fret is the same note as the open string we started on, just an octave higher). Then the cycle continues to the D-shape again, but we're getting quite high up the fretboard now, so chord fingerings do get kind of awkward.

Anyway, we can almost see it like a conveyor belt, which, laid flat would look like... E-D-C-A-G-E-D-C-A-G- etc.

In this particular example, the sequence happened to start with the "E" from "CAGED" and continued the cycle from there. Remember, the letters in CAGED represent the chord shape, not the chord type (the chord type was E major in this example).

Take a look at that diagram again. Observe how the sequence of chords merge together and overlap each other. We already know which chord shapes share the exact same root note, so that creates an instant link to the next chord shape in sequence.

What this means is, if you know how to identify a particular key (using your knowledge of where chord shapes root notes lie), you can instantly know which related chord shapes lie nearby. For example, below is how the CAGED system would span out for the chord of Bmaj7 (B major 7th):

So, try picking your own chord and, using your knowledge of the sequence outlined above, and how certain chord shapes share the same root note, try and identify where all the related chord shapes would lie. Don't just play it in sequence, mix it around to really test your knowledge (e.g. instead of CAGED, try DACEG!).

Time for a deep breath...

Make sure you spend time getting to know all the chord relationships we've looked at. Be on the lookout for these common relationships between the chord shapes. You will have your own ways of seeing these relationships, and the more you look for them and play around with them, the more they will sink in.

Remember, you don't have to play the full chord shapes. Cutting them down can help with more convenient fingering. Knowing the full shapes is, however, beneficial on the theory side of things.

If you're still confused, you just need to spend more time learning the fretboard. This interactive software provides you with all the exercises and tools you need to finally master chord and scale relationships.

Enjoy your discoveries.

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