Bb Dominant 6th

Symbols:Bb7(6)
Scale Degree Formula:1-3-5-6-♭7
Interval Stack:M3 + m3 + M2 + m2
Notes:Bb, D, F, G, G#
Hear this chord:▸ Synth

Construction

Using the scale degree formula, we first start with the Bb 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 1-3-5-6-♭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 (Bb), then move our first interval (M3), which brings us to our second note in the chord (D). 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:
Bb1B♭2C2C#♭3D3D#4E♭5F5F##5G6G#♭7M3m3M2m2

Similar Chords

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

Chord TypeChords
7th Suspended Four Flat 9thG7sus4b9
Dominant 7thBb7
Dominant 7th Flat 9thG7b9, Bb7b9
Dominant 7th Flat Five Flat 9thE7b5b9
Dominant 7th Flat ThirteenthBb7b13
Dominant 7th Sharp 9thG7#9, Bb7#9
Dominant 9thBb9
Major 6thBbM6
Major 9thD#M9
Major 9th Flat FifthG#Maj9b5
Major EleventhD#M11
Minor 7thGm7
Minor 7th Flat ThirteenthGm7b13
Minor 9thGm9
Minor Eleventh Flat NineGm11b9
Minor Six-NineFm6/9
Six-NineBb6/9

Associated Scales

This chord can be found in the following scales.

ScaleRoots
DorianF
Dorian b5F
Harmonic MajorD#
LocrianD
Locrian bb7D
LydianG#
Lydian Augmented #2B
Lydian b3G#
MajorD#
MinorC
MixolydianBb
Mixolydian b2Bb
PhrygianG
Phrygian b4G

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