Up to this point we have covered the basic triad version of a diminished chord. It is only at this point, with the addition of a 4th note, where the diminished chords really come into their own and become a more familiar part of chord progressions. In this video we talk generally about the diminished chord and its purpose.

Summary: Diminished Chords

During this course we will tackle two types of diminished chords; The Minor 7 flat 5 (m7b5) and the Diminished 7th chord (dim7). Both of these chords are 7th versions of diminished chords, but have a big difference which we will work out as we work through the chords. To start with we need to remember that our diminished triad is 1st, b3rd & b5th, as we will be building from there. We also will be using E as our example for each chord, so we need to get the E major scale written out as shown here:

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The m7b5 Chord

Our first diminished chord, the minor 7th flat 5 chord, is also commonly known as 'half diminished'. This chord is a more relaxed version of the intense diminished triad and therefore finds a use in blues, jazz and a variety of other genres. We therefore tackle the construction of this chord as well as the uses.