D9

Extended · D root

D9

A dominant 7th with an added 9th. Funky and full of energy.

0 st4 st7 st10 st14 st

Notes in D9

DRoot
F#3rd
A5th
C7th
E9th

D is bright and resonant, especially on guitar (open D chord). Very common in folk, rock, and pop.

Identify the Chord Quality on D

Each chord below is played on D. Listen and identify whether you heard D9, Dm, D7, or another quality — the hardest and most useful ear training skill.

Dominant 9th in All 12 Keys

C9C#9D♭9D9D#9E♭9E9F9F#9G♭9G9G#9A♭9A9A#9B♭9B9

Other Chords in D

DMajorDmMinorD°DiminishedD+AugmentedDsus2Sus2Dsus4Sus4Dmaj7Major 7thDm7Minor 7thD7Dominant 7thDø7Half Diminished

Related Extended

Dmaj9Major 9thDm9Minor 9thD1111thD1313th

About the D9 Chord

The D9 chord is a dominant 9th chord built on D. It contains the notes D, F#, A, C, E — the root, third, fifth, seventh, and extensions.

A dominant 7th with an added 9th. Funky and full of energy. Practising the D9 chord across different voicings and contexts builds the harmonic recognition that lets you identify it instantly in any musical setting — whether in a band mix, a recording, or a live performance.