Eb Diminished Triad
Chord Tones: Eb Diminished Triad
Symbol: dim, ° — Formula: 1-♭3-♭5
| Degree | Note | Frequency (A=440, Equal) |
|---|---|---|
| 1 | Eb | 311.127 Hz |
| ♭3 | Gb | 369.994 Hz |
| ♭5 | A | 440.000 Hz |
Chord Notation
| Notation Type | Symbol / Value |
|---|---|
| Lead Sheet Symbol | Ebdim |
| All Common Symbols | dim, ° |
| Interval Formula | 1-♭3-♭5 |
| Harmonic Category | dissonant |
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 | Eb – Gb – A | Eb | Eb Diminished Triad |
| First Inversion | Gb – A – Eb | Gb | Eb Diminished Triad/Gb |
| Second Inversion | A – Eb – Gb | A | Eb Diminished Triad/A |
Harmonic Function
The Eb diminished chord commonly functions as the mediant (♭III) in C minor or subdominant in B♭ major. Its harmonic role varies by key — in major keys it provides stable harmonic grounding.
The diminished triad features a flat third and flat fifth, creating a tense, unstable sound. It occurs naturally on the seventh degree of the major scale and resolves strongly to the tonic.
Common Progressions
The Eb Diminished Triad frequently appears in these progression patterns (shown in Roman numeral notation relative to key):
vii°-Iii°-V
Songs Featuring the Diminished Triad
Well-known songs where the Eb Diminished Triad — or this chord type — plays a prominent role:
- Whole Lotta Love – Led Zeppelin (bridge)
- Killing Me Softly – Roberta Flack
- Black Magic Woman – Santana
Tuning Frequencies Across Temperaments
Frequencies shown at A=440 Hz. View full temperament data for any note.
| Note | Equal Temp. | Pythagorean | Just Intonation |
|---|---|---|---|
| Eb | 311.127 Hz | 309.026 Hz | 313.951 Hz |
| Gb | 369.994 Hz | 371.251 Hz | 367.911 Hz |
| A | 440.000 Hz | 440.000 Hz | 436.043 Hz |
Scales Containing the Eb Diminished Triad
These scales include the Eb Diminished Triad as a diatonic or characteristic chord: