G Major 7th Flat Thirteenth

Symbols:GMaj7b13
Scale Degree Formula:1-3-5-7-♭13
Interval Stack:M3 + m3 + M3 + M6
Notes:G, B, D, F#, D#
Hear this chord:▸ Synth

Construction

Using the scale degree formula, we first start with the G 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-♭13, 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 (G), then move our first interval (M3), which brings us to our second note in the chord (B). 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:
G1G#♭2A2Bb♭3B3C4C#♭5D5D##5E6F♭7F#7G8G#♭9A9Bb♭10B10C11C##11D12D#♭13M3m3M3M6

Similar Chords

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

Chord TypeChords
Augmented Major 7thG+Maj7, D#+Maj7
Dominant 7th Flat ThirteenthG7b13, B7b13
Dominant 7th Sharp 9thB7#9
Dominant 7th Sharp Five Sharp 9thD#7#5#9, B7#5#9
Major 7thGM7
Major 9thGM9
Minor 7th Flat ThirteenthBm7b13
Minor 9thEm9
Minor Major 9thEmMaj9, CmMaj9

Associated Scales

This chord can be found in the following scales.

ScaleRoots
Dorian b5A
Harmonic MajorG
Locrian bb7F#
Lydian Augmented #2D#
Lydian b3C
Mixolydian b2D
Phrygian b4B

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