About the D diminished seven flat nine chord
D diminished seven flat nine sits outside the plain diatonic set, so it is borrowed to add color and tension. Think of it as a D diminished seventh flat nine chord.
Its notes are D, F, A♭, C♭, and E♭. The intervals are a minor third, a diminished fifth, a diminished seventh, and a minor ninth.
Inversions
D diminished seven flat nine (root position)
Notes and intervals
| 1 | D | Root |
|---|---|---|
| 2 | F | Minor 3rd |
| 3 | A flat | Diminished 5th |
| 4 | C flat | 7d |
| 5 | E flat | Minor 9th |
Shapes
Chromatic
Circle of Fifths
Other D chords
Simpler triads
Suspended
D suspended two chordD suspended four chordD seven suspended four chordD nine suspended four chordD thirteen suspended four chord
Sixths and sevenths
D six chordD minor six chordD minor flat six chordD seven chordD major seven chordD minor seven chordD minor seven flat five chordD diminished seven chordD minor major seven chordD major seven flat five chordD major seven sharp five chordD minor major seven flat five chord
Extensions
D nine chordD add nine chordD major nine chordD minor nine chordD eleven chordD thirteen chordD six nine chordD minor add nine chordD major eleven chordD major thirteen chordD minor eleven chordD minor thirteen chordD minor six nine chordD minor major nine chordD minor major eleven chord
Altered
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