E♭ Augmented Chord (Ebaug, D#aug) on Piano
The Ebaug chord (Eb augmented) is built from 3 notes: Eb – G – B. It is also written as D#aug.
Play these notes on a MIDI keyboard, your computer keyboard, or the on-screen keys and ChordKeys will name the chord back to you.
Notes and intervals
| Note | Degree | Interval from Eb | Semitones |
|---|---|---|---|
| Eb | 1 | root | 0 |
| G | 3 | major 3rd | 4 |
| B | #5 | augmented 5th | 8 |
Inversions
Rearranging which note sits at the bottom gives you 3 playable voicings of the same chord. Inversions let you move between chords with less hand movement.
| Voicing | Notes | Bass note |
|---|---|---|
| Root position | Eb – G – B | Eb in the bass |
| 1st inversion | G – B – Eb | G in the bass |
| 2nd inversion | B – Eb – G | B in the bass |
How the augmented chord is built
Every augmented chord uses the same interval formula: 1 (0 semitones), 3 (4 semitones), #5 (8 semitones). Starting on Eb and applying that formula produces Eb, G, B. Learn the formula once and you can build a augmented chord on any of the twelve roots.
Other chords on Eb
Augmented chords on other roots
Frequently asked questions
What notes are in a Ebaug chord?
A Ebaug chord contains the notes Eb, G, B. Those are the 1, 3, #5 degrees measured from the root note Eb.
How do you play Ebaug on piano?
Place your thumb on Eb, then add G and B above it. With a right hand in root position the common fingering is 1–3–5.
Is Ebaug the same as D#aug?
Yes. Ebaug and D#aug are enharmonic equivalents — they sound identical and use the same piano keys. Which spelling you use depends on the key you are playing in.