A dominant seventh flat five sharp ninth chord is composed using a root/1st, major 3rd, diminished 5th, minor 7th, augmented 9th (or R/1-3-♭5-♭7-♯9) intervals played simultaneously. Generally written as C7(♭5♯9) or C7(-5+9), it is good practice to simply use an uppercase C followed by a super scripted 7(♭5♯9) to represent it in writing (ie: C7(♭5♯9)).
Dominant seventh flat five sharp ninth chord profile
| Intervals | root/1st, major 3rd, diminished 5th, minor 7th, augmented 9th or R/1-3-♭5-♭7-♯9 |
|---|---|
| Stability | Dissonant, unresolved |
| Grouping class | Pentad |
| Common names (examples in C) | C7(♭5♯9), C7(-5+9) |
Chord shapes/voicings
Audio sample(s)
| C dominant seventh flat five sharp ninth chord #2 |
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