Finger Positions

Root Note D

Name D major ninth over D#

Intervals 1P-3M-5P-7M-9M

Relative Minor Bm

Notes D#, D, F#, A, C#, E

Aliases Dmaj9, DΔ9, D^9

How to play the Dmaj9/D# Chord

The Dmaj9/D# is a fundamental major chord in guitar music. To play this chord correctly, ensure your fingers are placed precisely on the frets indicated in the diagram above.

Music Theory Analysis

From a theoretical perspective, the D major ninth over D# is built using the 1P, 3M, 5P, 7M, 9M intervals. In the key of D Major, this chord functions as the I chord.

Common Progressions

In music composition, the Dmaj9/D# chord is often used to create tension or resolution.

I-V-vi-IV

D → A → Bm → G

vi-IV-I-V

Bm → G → D → A

The Diatonic Family

Understanding the "family" of chords that belong to D helps with transposition and ear training.

Triads

D Em F#m G A Bm C#dim

7ths

Dmaj7 Em7 F#m7 Gmaj7 A7 Bm7 C#m7b5

Scale Compatibility

View All Scales

Major Bebop Lydian Harmonic Major Bebop Major Ichikosucho Messiaen's Mode #3 Chromatic

* 8 scales found containing the notes D#, D, F#, A, C#, E.

Acoustic & Digital Analysis

Digital footprint of the Dmaj9/D# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 63, 62, 66, 69, 61, 64

Frequencies (Hz)

311.1269837220809, 293.6647679174076, 369.9944227116344, 440, 277.1826309768721, 329.6275569128699