About the D flat augmented seven flat nine chord
D flat augmented seven flat nine sits outside the plain diatonic set, so it is borrowed to add color and tension. Think of it as a D♭ augmented seventh flat nine chord.
Its notes are D♭, F, A, C♭, and D. The intervals are a major third, an augmented fifth, a minor seventh, and a minor ninth.
Also called C sharp augmented seven flat nine, which spells the same notes enharmonically. In shorthand it is commonly written Dbaug7b9.
Inversions
D flat augmented seven flat nine (root position)
Notes and intervals
| 1 | D flat | Root |
|---|---|---|
| 2 | F | Major 3rd |
| 3 | A | Augmented 5th |
| 4 | C flat | Minor 7th |
| 5 | D | Minor 9th |
Shapes
Chromatic
Circle of Fifths
Other D flat chords
Simpler triads
Suspended
D flat suspended two chordD flat suspended four chordD flat seven suspended four chordD flat nine suspended four chordD flat thirteen suspended four chord
Sixths and sevenths
D flat six chordD flat minor six chordD flat minor flat six chordD flat seven chordD flat major seven chordD flat minor seven chordD flat minor seven flat five chordD flat diminished seven chordD flat minor major seven chordD flat major seven flat five chordD flat major seven sharp five chordD flat minor major seven flat five chord
Extensions
D flat nine chordD flat add nine chordD flat major nine chordD flat minor nine chordD flat eleven chordD flat thirteen chordD flat six nine chordD flat minor add nine chordD flat major eleven chordD flat major thirteen chordD flat minor eleven chordD flat minor thirteen chordD flat minor six nine chordD flat minor major nine chordD flat minor major eleven chord