D# Diminished Major 7th

Symbols:D#dimMaj7
Scale Degree Formula:1-♭3-♭5-7
Interval Stack:m3 + m3 + P4
Notes:D#, F#, A, D
Hear this chord:▸ Synth

Construction

Using the scale degree formula, we first start with the D# major scale, and number each note in the scale starting from 1 - these are the scale degrees. Next, we use the scale degree formula, in this case 1-♭3-♭5-7, to select notes from our enumerated scale. When a chord requires notes that are not in the scale, this is indicated with a flat (♭) or a sharp (#) along with the scale degree; a ♭3, for instance, would be one half-step down from the 3rd scale degree.
Alternatively, we can use the interval stack to construct our chord. With this approach, we first start with the root of the chord (D#), then move our first interval (m3), which brings us to our second note in the chord (F#). We repeatedly apply each of the remaining intervals in the stack to get the full list of notes for our chord.
The diagram below shows how both the scale degree formula and interval stack methods result in the same selection of notes:
D#1E♭2F2F#♭3G3G#4A♭5Bb5B#5C6C#♭7D7m3m3P4

Similar Chords

The following chords are similar to this chord and may be a suitable replacement in certain scenarios.

Chord TypeChords
Added 9thDadd9
Augmented Major 7thBb+Maj7
DiminishedD#dim
Diminished 7thF#dim7, D#dim7, Cdim7, Adim7
Dominant 7thD7, B7
Dominant 7th Flat 9thD7b9
Dominant 7th Sharp 9thB7#9
Half-Diminished 7thD#m7(b5)
MajorD
Major 2ndD2
Major 6thDM6
Major 7thDM7
Major 7th Flat FifthD#Maj7b5
Major Added 11thDadd11
Minor 6thF#m6
Minor 7thBm7
Minor Major 7thD#mM7

Associated Scales

This chord can be found in the following scales.

ScaleRoots
Dorian b5C, A
Harmonic MajorBb, G
Harmonic MinorG
Ionian #5Bb
Locrian bb7A, F#
Locrian ♮6A
Lydian #9D#
Lydian Augmented #2F#, D#
Lydian b3C, D#
Mixolydian b2D, F
Phrygian DominantD
Phrygian b4D, B
Super-Locrian bb7F#
Ukrainian DorianC

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