E Augmented Triad
Chord Tones: E Augmented Triad
Symbol: aug, + — Formula: 1-3-♯5
| Degree | Note | Frequency (A=440, Equal) |
|---|---|---|
| 1 | E | 329.628 Hz |
| 3 | G# | 415.305 Hz |
| ♯5 | C | 261.626 Hz |
Chord Notation
| Notation Type | Symbol / Value |
|---|---|
| Lead Sheet Symbol | Eaug |
| All Common Symbols | aug, + |
| Interval Formula | 1-3-♯5 |
| Harmonic Category | unstable |
Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.
Inversions
| Inversion | Notes (low to high) | Bass Note | Slash Notation |
|---|---|---|---|
| Root Position | E – G# – C | E | E Augmented Triad |
| First Inversion | G# – C – E | G# | E Augmented Triad/G# |
| Second Inversion | C – E – G# | C | E Augmented Triad/C |
Harmonic Function
The E augmented chord commonly functions as the mediant (iii) in C major or dominant (V) in A major. Its harmonic role varies by key — in major keys it provides stable harmonic grounding.
The augmented triad consists of two stacked major thirds, creating a symmetrical, ambiguous chord. Its raised fifth gives it a tense, unresolved quality that pulls toward resolution.
Common Progressions
The E Augmented Triad frequently appears in these progression patterns (shown in Roman numeral notation relative to key):
I+-IVV+-I
Songs Featuring the Augmented Triad
Well-known songs where the E Augmented Triad — or this chord type — plays a prominent role:
- Oh! You Pretty Things – David Bowie
- All Blues – Miles Davis
- Michelle – The Beatles
Tuning Frequencies Across Temperaments
Frequencies shown at A=440 Hz. View full temperament data for any note.
| Note | Equal Temp. | Pythagorean | Just Intonation |
|---|---|---|---|
| E | 329.628 Hz | 330.001 Hz | 327.032 Hz |
| G# | 415.305 Hz | 417.657 Hz | 418.601 Hz |
| C | 261.626 Hz | 260.740 Hz | 261.626 Hz |
Scales Containing the E Augmented Triad
These scales include the E Augmented Triad as a diatonic or characteristic chord: