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.
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: