What are the rules for using diminished chords in part writing?



Asked by: Danny Pilares

It is always best to put a dim7 in first inversion and double the third of the chord since that tone is also the 5th of the V chord; which sets up a nice suspension for a V6/4 before a cadence. To Andrew: Bach heavily employs iim7b5 chords as predominants in both minor and major, so both are equally acceptable.

How do you use diminished chords in songwriting?





How to use a diminished chord in the same way that these songs do:

  1. In a major key, identify your vi chord (the minor chord six scale degrees above your tonic note)
  2. Build a diminished triad or 7th chord a half step below you iv chord.
  3. Resolve to your vi chord.

How do you notate diminished chords?

Diminished chord symbols
Diminished chords almost always use a circle as their symbol: C° C°7. Cdim.

How do you write diminished?

Diminished Chord
It is indicated by the symbol “o” or “dim.” For example, the G triad based on a major scale is formed by playing G (the root note), B (the third note), and D (the fifth note).

How do you use diminished chords as dominant chords?





A diminished 7 chord can replace an altered dominant 7 chord (commonly b9 or #9) when the root of the diminished 7 is a half-step above the root of the altered dominant 7. Essentially, if you see a dominant 7 chord resolving to another chord, it can be altered.

How do you notate half diminished?

Half Diminished Chord Symbol
The half diminished part is notated by a circle with a line through it – “ø”. Another way you can see a half diminished chord written is as a minor 7th chord with a flattened 5th – Cmin7b5 or G#m7(b5) for example.

What does a diminished chord resolve to?

In other words, if you form a diminished chord on the fretboard of the guitar, keyboard or any instrument and then move that same chord three semitones up or down, the chord will remain the same! This is very convenient, because if we want to play, for example, A°, we can play C° (since it is the same chord!).

How do you write a diminished 7 chord?

Ab – Gb is the minor seventh. When combined, they form an Ab half-diminished seventh chord: Ab – Cb – Ebb – Gb. Finally, a diminished triad and a diminished seventh combine to form a diminished seventh chord (or fully-diminished seventh chord). Diminished seventh chords are abbreviated with an open circle and a 7.

What is the difference between a diminished chord and a half diminished chord?

The difference between a diminished chord and a half diminished chord lies in the seventh. The half diminished chord (m7b5) has a minor seventh (7) – it’s a m7 chord wth a flat five (b5). The diminished chord has a diminished seventh (dim7, °7).



Are diminished chords altered chords?

If any of those notes is lowered or raised by a semitone, they can be referred to as “alterations.” (Thirds and sevenths in jazz are usually considered to determine the chord identity: major or minor third, with major or minor or diminished seventh.

Can a diminished chord be a dominant?

The diminished seventh chord occurs as a leading-tone seventh chord in the harmonic minor scale. It typically has dominant function and contains two diminished fifths, which often resolve inwards.

Which diminished scale for dominant?

The “half/whole diminished scale” works over a dominant seventh with a flat nine and/or sharp nine chord. This is why some people call it the “dominant diminished scale”.



How many diminished chords are there?

3

Because of this the diminished chord repeats at intervals of minor thirds. This means there are only 3 unique diminished chords: Cdim7 = E♭dim7 = G♭dim7 = Adim7.