The diminished seventh chord: a big harmonic resource

The diminished seventh chord

What is it that makes the diminished seventh chord unique?
Its enormous harmonic flexibility.

This chord built on a minor scale grade by superposing thirds, can be used in many other situations.
It is a wildcard in the world of harmony

Perhaps the most fascinating thing about this chord is that it allows us to put into practice everything about enharmonic relation.
As we shall understand in this lesson, the diminished seventh chord is the key to modulate easily, in particular with cases in which this would be very difficult.

In order to understand how all of this is possible and to learn all the characteristics of this chord in-depth, you only have to follow this lesson.

If you have not already done so, I suggest you watch:

• The Equal Tempered System and the Enharmony (part 1)
• The Equal Tempered System and the Enharmony (part 2)