D9♭5
D 9th Flat 5 · 4 fingerings
A dominant ninth with a flattened fifth, D9♭5 combines the richness of the ninth with the ambiguity of the lowered fifth. It's firmly jazz and fusion vocabulary, generally used as a tense dominant heading somewhere else, and it maps neatly onto whole-tone thinking. A specialist colour rather than an everyday chord.
D9♭5 · position 1 · fret 4
D9♭5 · position 2 · fret 5
D9♭5 · position 3 · fret 9
D9♭5 · position 4 · fret 10