A dominant seventh sharp five chord, also known as an augmented seventh chord, is composed using a root/1st, major 3rd, augmented 5th and minor 7th (or R/1-3-♯5-♭7) intervals played simultaneously. Generally written as C7(♯5), C+7 or Caug(7), it is good practice to simply use an uppercase C followed by a super scripted 7(♯5) to represent it in writing (ie: C7(♯5)) however, it is also common place to see it written as C⁺(7).
Dominant seventh sharp five chord profile
| Intervals | root/1st, major 3rd, augmented 5th, minor 7th or R/1-3-♯5-♭7 |
|---|---|
| Stability | Dissonant, unstable, unresolved |
| Grouping class | Tetrad |
| Common names (examples in C) | C7(♯5), C+7, Caug(7) |
Chord shapes/voicings
Dominant seventh sharp five chord table
| Chord name | Root | Major third | Augmented fifth | Minor seventh |
|---|---|---|---|---|
| C7(♯5) | C | E | G♯ | B♭ |
| C♯7(♯5) | C♯ | E♯ (F) | G (A) |
B |
| D♭7(♯5) | D♭ | F | A | C♭ (B) |
| D7(♯5) | D | F♯ | A♯ | C |
| D♯7(♯5) | D♯ | F (G) |
A (B) |
C♯ |
| E♭7(♯5) | E♭ | G | B | D♭ |
| E7(♯5) | E | G♯ | B♯ (C) | D |
| F7(♯5) | F | A | C♯ | E♭ |
| F♯7(♯5) | F♯ | A♯ | C (D) |
E |
| G♭7(♯5) | G♭ | B♭ | D | F♭ (E) |
| G7(♯5) | G | B | D♯ | F |
| G♯7(♯5) | G♯ | B♯ (C) | D (E) |
F♯ |
| A♭7(♯5) | A♭ | C | E | G♭ |
| A7(♯5) | A | C♯ | E♯ (F) | G |
| A♯7(♯5) | A♯ | C (D) |
E (F♯) |
G♯ |
| B♭7(♯5) | B♭ | D | F♯ | A♭ |
| B7(♯5) | B | D♯ | F (G) |
A |
Audio sample(s)
| C Dominant seventh sharp five chord voicing #2 |
|---|
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