E♭aug7: D♯/E♭ Augmented 7th Piano Chord

Root position: either hand, fingers low note to high
Hand	Notes	Fingers
Right	E♭, G, B, D♭	2-3-4-5
Left	E♭, G, B, D♭	5-4-3-2

Scale degree, note, and interval measured from the root.
Degree	Note	Interval from root	Semitones
1	E♭	Perfect unison	0
3	G	Major third	4
♯5	B	Minor sixth	8
♭7	D♭	Minor seventh	10

Construction

E♭ Augmented 7th = Root + Major 3rd + Minor 6th + Minor 7th = E♭, G, B, D♭

Note	Interval	Degree
E♭	Root	1
G	Major 3rd	3
B	Minor 6th	♯5
D♭	Minor 7th	♭7

Fingering

Note	Key color	Right hand	Left hand
E♭	black	index finger (2)	little finger (5)
G	white	middle finger (3)	ring finger (4)
B	white	ring finger (4)	middle finger (3)
D♭	black	little finger (5)	index finger (2)

Right hand: index finger (2) on E♭, middle finger (3) on G, ring finger (4) on B, little finger (5) on D♭.

Left hand: little finger (5) on E♭, ring finger (4) on G, middle finger (3) on B, index finger (2) on D♭.

E♭ Augmented 7th Inversions

Root position
E♭ – G – B – D♭
1st inversion (E♭aug7/G)
G – B – D♭ – E♭
2nd inversion (E♭aug7/B)
B – D♭ – E♭ – G
3rd inversion (E♭aug7/D♭)
D♭ – E♭ – G – B

Key Signature

A Augmented 7th chord is built from symmetrical or ambiguous intervals, so it doesn't belong to a single key and has no key signature of its own.

Chords in the Key of E♭ Major

These are the triads built on each degree of E♭ Major:

I — E♭ Major (major)

Degree	Numeral	Chord	Quality
1	I	E♭ Major	Major
2	ii	F Minor	Minor
3	iii	G Minor	Minor
4	IV	A♭ Major	Major
5	V	B♭ Major	Major
6	vi	C Minor	Minor
7	vii°	D Diminished	Diminished

Same Notes, Other Names

The notes E♭ – G – B – D♭ aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:

E♭ 7♯5→

E♭ Augmented 7th : Frequently Asked Questions

What is the E♭ Augmented 7th chord on piano?

The E♭ Augmented 7th chord contains the notes E♭ – G – B – D♭. On piano, play these notes together to sound the chord.

What notes are in the Eb Augmented 7th chord?

The Eb Augmented 7th chord (Eb+7) contains four notes: Eb (root), G (major third), B (augmented fifth), and Db (minor seventh). It combines an augmented triad with a minor seventh.

How does Eb Augmented 7th differ from Eb Dominant 7th?

Both contain Eb, G, and Db. Eb+7 has B (augmented fifth) while Eb7 has Bb (perfect fifth). The raised fifth adds extra tension and upward pull.

How is Eb Augmented 7th used in music?

Eb+7 is an altered dominant resolving to Ab Major. The B pulls up to C while Db pulls down to C: both converge on the third of Ab. Common in jazz and gospel.

What genres use Augmented 7th chords?

Augmented 7th chords are common in jazz, gospel, blues, and R&B for adding emotional intensity to dominant resolutions.

What songs use Augmented 7th chords?

Augmented 7th chords appear in jazz standards and gospel. Eb+7 resolves to Ab Major, a key popular with vocalists and R&B artists.

What is the difference between +7 and 7#5?

They are the same chord. Eb+7, Eb7#5, and Ebaug7 all refer to Eb Augmented 7th.

E♭ Augmented 7th in detail

Exact

Every pitch class is present and nothing outside the chord is added.

Type	Notes	Semitones	Span	Omissions and additions	Set relation
Close, root position	E♭3 G3 B3 D♭4	10	138 mm	none	identical
Close, first inversion	G3 B3 D♭4 E♭4	8	110 mm	none	identical
Close, second inversion	B3 D♭4 E♭4 G4	8	110 mm	none	identical
Close, third inversion	D♭4 E♭4 G4 B4	10	138 mm	none	identical
Drop 2	B2 E♭3 G3 D♭4	14	193 mm	none	identical
Drop 3	G2 E♭3 B3 D♭4	18	248 mm	none	identical
Drop 2 and 4	E♭2 B2 G3 D♭4	22	303 mm	none	identical

Reduced

A subset of the pitch classes: the identity is incomplete rather than altered.

Type	Notes	Semitones	Span	Omissions and additions	Set relation
Shell, root ♭7 3	E♭2 D♭3 G3	16	220 mm	omits B	subset
Guide tones, 3 and ♭7	G3 D♭4	6	83 mm	omits E♭ and B	subset
Rootless close	G3 B3 D♭4	6	83 mm	omits E♭	subset

Spans are measured centre to centre at a 165 mm octave (standard keyboard geometry).

Position	Bass note	Notes in order	Figured bass	Semitones	Span
Root position	E♭	E♭3, G3, B3, D♭4	7	10	138 mm
First inversion: E♭aug7/G	G	G3, B3, D♭4, E♭4	6/5	8	110 mm
Second inversion: E♭aug7/B	B	B3, D♭4, E♭4, G4	4/3	8	110 mm
Third inversion: E♭aug7/D♭	D♭	D♭4, E♭4, G4, B4	4/2	10	138 mm

One position per chord tone in the bass. Spans are for close position: voiced inversions appear under Voicings.

Change one note

Chords a single note away, and what moving that note does.

Chord	Change	Formula	Common tones
E♭aug	drops D♭	1 3 ♯5	3
E♭7	B becomes B♭	1 3 5 ♭7	3
E♭9	B becomes B♭, F	1 3 5 ♭7 9	3
E♭	B, D♭ becomes B♭	1 3 5	2
E♭maj7	B, D♭ becomes B♭, D	1 3 5 7	2
E♭m7	G, B becomes G♭, B♭	1 ♭3 5 ♭7	2
E♭m7♭5	G, B becomes G♭, B♭♭	1 ♭3 ♭5 ♭7	2
E♭7sus4	G, B becomes A♭, B♭	1 4 5 ♭7	2
E♭6	B, D♭ becomes B♭, C	1 3 5 6	2
E♭add9	B, D♭ becomes B♭, F	1 3 5 9	2

Frequencies

Note	MIDI	Frequency
E♭3	51	155.56 Hz
G3	55	196.00 Hz
B3	59	246.94 Hz
D♭4	61	277.18 Hz

Reference pitch A440, 12-TET, close root position.

Set theory: prime form, Forte number, interval vector

Absolute pitch class set: {3, 7, 11, 1}
Normal order: [11, 1, 3, 7]
Prime form: (0248)
Forte number: 4-24
Interval vector: <020301>

Pair	Interval	Semitones	Interval class
E♭ to G	Major third	4	4
E♭ to B	Minor sixth	8	4
E♭ to D♭	Minor seventh	10	2
G to B	Major third	4	4
G to D♭	Tritone	6	6
B to D♭	Major second	2	2

Where these facts come from

Every value on this page is derived from the note formula for a augmented 7th applied to the root E♭, using standard music theory. Nothing here is hand-entered per chord, so the notes, intervals, inversions and frequencies cannot drift out of agreement with each other. Pitches assume 12-TET at A440.

E♭ Augmented 7th

Fingerings

E♭ Augmented 7th: notes and degrees