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Chord · Eb Dominant 9th

E9 Chord

E9 is Eb, G, Bb, Db and Ffunky, soulful; James Brown territory.

Hear it

E9 on every instrument

The same 5 notes, 4 sets of hands. Open a diagram for alternate shapes, audio and the mistakes to avoid.

×5fr21333EADGBE
Guitar1 voicing
CDEFGAB
Piano4 voicings
7fr2143GCEA
Ukulele1 voicing
10fr1213GDAE
Mandolin1 voicing

What E9 is made of

Eb Dominant 9th (Eb dominant 9th) is built from the notes Eb, G, Bb, Db, F, with the interval pattern 1, 3, 5, b7, 9. A common dominant 9th chord across many styles.

Stack 1, 3, 5, b7 and 9 on a root of E and you get Eb, G, Bb, Db and F. That interval recipe is what makes the chord a ninth chord — move the same shape to another root and the character travels with it, which is why C9 sounds like a transposed E9.

Dominant 9th: Funky, soulful; James Brown territory.

Spelling: the notes above are written the way a score would write them, not simplified to the nearest piano key. That is why this chord is spelled with E rather than its enharmonic equivalent.

Keys that contain E9

All 5 notes sit inside the scale of 2 keys. The roman numeral marks the degree the chord is rooted on.

Other chords on E

Same root, different colour.

The same ninth shape, moved

The identical interval recipe, built on other roots.

Questions people ask about Eb9

What notes are in the Eb9 chord?
Eb9 is made of Eb, G, Bb, Db and F — the 1, 3, 5, b7 and 9 degrees of a ninth chord built on Eb.
What keys use the Eb9 chord?
Every note of Eb9 belongs to 2 keys: Ab Major (V), F Minor (VII). The roman numeral is the scale degree the chord is rooted on.
How do you play Eb9 on guitar and piano?
This page shows Eb9 on guitar, piano, ukulele and mandolin — 7 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
Is Eb9 the same as D#9?
Yes. Eb9 and D#9 are enharmonic — identical pitches written two different ways. Which spelling you use depends on the key you are in; Eb9 is the spelling this site treats as canonical.

Learn the theory behind it

Why E9 behaves the way it does — the guides that explain the chord instead of just spelling it.

Functional Harmony: Three Roles, One EngineWhat a seventh chord is for — tension, resolution, and the seat it takes in the key.6 min readThe 12-Bar Blues — Three Chords, A Century of HitsSeventh chords are the whole sound of the blues. Twelve bars is where to hear it.7 min read