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Chord · Db Add 9

Dadd9 Chord

Dadd9 is Db, F, Ab and Ebmajor triad with an added 9th; pop and folk staple.

Hear it

Dadd9 on every instrument

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

×4fr12431EADGBE
Guitar1 voicing
CDEFGAB
Piano3 voicings
4fr3214GCEA
Ukulele1 voicing
10fr1234GDAE
Mandolin1 voicing

What Dadd9 is made of

Db Add 9 (Db add 9) is built from the notes Db, F, Ab, Eb, with the interval pattern 1, 3, 5, 9. A common add 9 chord across many styles.

Stack 1, 3, 5 and 9 on a root of D and you get Db, F, Ab and Eb. That interval recipe is what makes the chord an add9 chord — move the same shape to another root and the character travels with it, which is why Fadd9 sounds like a transposed Dadd9.

Add 9: Major triad with an added 9th; pop and folk staple.

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 D rather than its enharmonic equivalent.

Keys that contain Dadd9

All 4 notes sit inside the scale of 10 keys. The roman numeral marks the degree the chord is rooted on.

Other chords on D

Same root, different colour.

The same add9 shape, moved

The identical interval recipe, built on other roots.

Questions people ask about Dbadd9

What notes are in the Dbadd9 chord?
Dbadd9 is made of Db, F, Ab and Eb — the 1, 3, 5 and 9 degrees of an add9 chord built on Db.
What keys use the Dbadd9 chord?
Every note of Dbadd9 belongs to 10 keys: Ab Major (IV), Db Major (I), F# Major (V), Gb Major (V), C# Major (I), F Minor (VI), Bb Minor (III), D# Minor (VII), Eb Minor (VII), A# Minor (III). The roman numeral is the scale degree the chord is rooted on.
How do you play Dbadd9 on guitar and piano?
This page shows Dbadd9 on guitar, piano, ukulele and mandolin — 6 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
Is Dbadd9 the same as C#add9?
Yes. Dbadd9 and C#add9 are enharmonic — identical pitches written two different ways. Which spelling you use depends on the key you are in; Dbadd9 is the spelling this site treats as canonical.

Learn the theory behind it

Why Dadd9 behaves the way it does — the guides that explain the chord instead of just spelling it.

Chord Inversions and Slash Chords — Same Notes, Different AttitudeSuspending or adding a tone is a voicing decision, the same kind as an inversion or a slash chord.5 min readChord Progressions ExplainedThese chords earn their keep inside a progression, leaning on the plain chord that follows.7 min readIntervals — The Only Music Theory You Actually NeedWhich degree got swapped in, and what that one interval changes.5 min read