Finger Positions

D#6add9/C diagram
Root Note D#
Name D# sixth added ninth over C
Intervals 1P-3M-5P-6M-9M
Relative Minor Cm
Notes D#, G, A#, C, F
Aliases D#6add9, D#6/9, D#69, D#M69

How to play the D#6add9/C Chord

The D#6add9/C is a fundamental dominant 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# sixth added ninth over C is built using the 1P, 3M, 5P, 6M, 9M intervals. In the key of D# Major, this chord functions as the I chord.

Common Progressions

In music composition, the D#6add9/C chord is often used to create tension or resolution.

I-V-vi-IV

D# → A# → Cm → G#

vi-IV-I-V

Cm → G# → D# → A#

The Diatonic Family

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

Triads

D# Fm Gm G# A# Cm Ddim

7ths

D#maj7 Fm7 Gm7 G#maj7 A#7 Cm7 Dm7b5

Scale Compatibility

View All Scales
Major Major Blues Bebop Lydian Mixolydian Lydian Dominant Bebop Minor Bebop Major Ichikosucho Composite Blues Chromatic

* 11 scales found containing the notes D#, G, A#, C, F.

Acoustic & Digital Analysis

Digital footprint of the D#6add9/C chord for MIDI programming and synthesizer sound design.

MIDI Numbers 63, 67, 70, 60, 65
Frequencies (Hz)

311.1269837220809, 391.99543598174927, 466.1637615180899, 261.6255653005986, 349.2282314330039