E Augmented Triad

Chord Tones: E Augmented Triad

Symbol: aug, + — Formula: 1-3-♯5

DegreeNoteFrequency (A=440, Equal)
1 E 329.628 Hz
3 G# 415.305 Hz
♯5 C 261.626 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolEaug
All Common Symbolsaug, +
Interval Formula1-3-♯5
Harmonic Categoryunstable

Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.

Inversions

InversionNotes (low to high)Bass NoteSlash 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):

Songs Featuring the Augmented Triad

Well-known songs where the E Augmented Triad — or this chord type — plays a prominent role:

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

NoteEqual Temp.PythagoreanJust 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: