C# Diminished Major 7th

Symbols:C#dimMaj7
Scale Degree Formula:1-♭3-♭5-7
Interval Stack:m3 + m3 + P4
Notes:C#, E, G, C
Hear this chord:▸ Guitar

Construction

Using the scale degree formula, we first start with the C# 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 lowest note of the chord (C#), then move our first interval (m3), which brings us to our second note in the chord (E). 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:
C#1D♭2D#2E♭3F3F#4G♭5G#5A#5Bb6B♭7C7m3m3P4

Similar Chords

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

Chord TypeChords
Added 9thCadd9
Augmented Major 7thG#+Maj7
DiminishedC#dim
Diminished 7thGdim7, Edim7, C#dim7, Bbdim7
Dominant 7thC7, A7
Dominant 7th Flat 9thC7b9
Dominant 7th Sharp 9thA7#9
Half-Diminished 7thC#m7(b5)
MajorC
Major 2ndC2
Major 6thCM6
Major 7thCM7
Major 7th Flat FifthC#Maj7b5
Major Added 11thCadd11
Minor 6thEm6
Minor 7thAm7
Minor Major 7thC#mM7

Associated Scales

This chord can be found in the following scales.

ScaleRoots
Dorian b5Bb, G
Harmonic MajorG#, F
Harmonic MinorF
Ionian #5G#
Locrian bb7G, E
Locrian ♮6G
Lydian #9C#
Lydian Augmented #2E, C#
Lydian b3Bb, C#
Mixolydian b2C, D#
Phrygian DominantC
Phrygian b4C, A
Super-Locrian bb7E
Ukrainian DorianBb

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