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Diminished Chords

Diminished chords
We have already touched on Diminished Chords in the ‘Chords defined’ page. We learned that one of the diatonic chords (chords that arise naturally from the major scale) is a half-diminished chord, better know as ‘minor seventh flat five’, or m7thb5. That name already says ‘diminished’ because the Perfect Fifth has been flatted by one semitone. So the diminished triad is 1-b3-b5 … both the third and the fifth have been flatted (or diminished) by a semitone. There is also another kind of diminished, one that has a ‘double flat seven’ note thrown in, which is a fancy way of saying ‘6’. There’s no need here to go into the reason why it’s called ‘bb7’ instead of 6, but this chord is sometimes called ‘Diminished 7th’, or ‘Full Diminished’ or even ‘Fully Diminished’. The constituent notes of a Dim7 chord are 3 semitones apart, so it has the same quirk as augmented chords: there are, in effect, only 4 diminished chords, since the inversions of any given one are three frets apart. 12 divided by 3 equals 4. Below are the most common shapes for Diminished chords. Let’s start with the ‘Half Diminished’, better known as the ‘Minor seventh flat five” chord.
Half Diminished or ‘m7thb5 chord shapes | 1 – b3 – b5 – b7
These are best played as four-note chords.
Full Diminished or Diminished 7th chord shapes | 1 – b3 – b5 – b7
These are also best played as four-note chords. The nice thing about full diminished chords is that you can move either of these two shapes up or down the fretboard by three frets and you will be playing the very same chord in a new inversion.
Sixth chords (6th)
6th chords (Major) | 1 – 3 – 5 – 6

A form: best shape to use

C form: lacks a 5, but a good shape.
6th chords (minor) | 1 – b3 – 5 – 6

E form: the only decent shape.

This shape lacks a 5 and is uncomfortable.

THE DIMINISHED CHORD TAKES ITS NAME FROM ANY OF THE NOTE SHOWN HERE….D#DIM OR C DIM OR A DIM OR F#DIM.IT IS ALSO POPULARLY WRITTEN AS  O OR C0The diminished and Augmented chords are quite forbidding as they sound,but,are essential in your  armoury of chords.

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Comments on: "Diminished Chords" (2)

  1. Awesome One……….

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