20. Diminished 7th chords

So you finally found someone who knows what these chords are, eh?

1. Topics of discussion

In this tutorial, we resume our learning journey by discussing diminished seventh chords. So, let’s have some fun.

2. Diminished 7th chords

Diminished 7th chords are obtained by taking a diminished triad and adding a double flatted 7th note of the major scale on top of it. Thus, the formula for such chords is the following one:

1 ♭3 ♭5 double-flat7

Let’s learn how to play the Cdim7 chord in various shapes, using the CAGED system. First off, the C form:

E|--14--|
B|--13--|
G|--14--|
D|--13--|
A|--15--|
E|------|

Here it is played back:

Finger wise, you’re going to play it like this:

Cdim7_Cform

Let’s move on to the A form:

E|--2--|
B|--4--|
G|--2--|
D|--4--|
A|--3--|
E|-----|

Here it is played back:

Finger wise, we’re going to play this chord like this:

Cdim7_Aform

Let’s move on to the G form:

E|-----|
B|--7--|
G|-----|
D|--7--|
A|--6--|
E|--8--|

Here it is played back:

Finger wise, we’re going to play this chord like this:

Cdim7_Gform

Let’s move on to the E form:

E|--8---|
B|--10--|
G|--8---|
D|--10--|
A|--9---|
E|--8---|

Here it is played back:

Finger wise, we’re going to play this chord like this:

Cdim7_Eform

Finally, let’s move on to the D form:

E|---11---|
B|---10---|
G|---11---|
D|---10---|
A|--------|
E|--------|

Here it is played back:

Finger wise, we’re going to play this chord like this:

Cdim7_Dform

So when do diminished 7th chords come into play? Well, they can be played on the 7th note of a harmonic minor scale for one. They can also be played in a diatonic scale, with the root note being located between the notes that are separated by a whole step.

In other words, if a song is written in the key of C, you may encounter chords such as D♯dim7 (D♯ is located between D and E), or G♯dim7 (G is located between G and A) and so on. This is used in jazz music a lot.

That about covers it for this tutorial. Next up, we will be looking at chord inversions and what is known as slash chords. See you then.

Chord charts generated using this chord generator

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this:
search previous next tag category expand menu location phone mail time cart zoom edit close