A Dominant 6th

Symbols:A7(6)
Scale Degree Formula:1-3-5-6-♭7
Interval Stack:M3 + m3 + M2 + m2
Notes:A, C#, E, F#, G
Hear this chord:▸ Guitar

Construction

Using the scale degree formula, we first start with the A 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 lowest note of the chord (A), then move our first interval (M3), which brings us to our second note in the chord (C#). 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:
A1Bb♭2B2C♭3C#3D4D#♭5E5F#5F#6G♭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 9thF#7sus4b9
Dominant 7thA7
Dominant 7th Flat 9thF#7b9, A7b9
Dominant 7th Flat Five Flat 9thD#7b5b9
Dominant 7th Flat ThirteenthA7b13
Dominant 7th Sharp 9thF#7#9, A7#9
Dominant 9thA9
Major 6thAM6
Major 9thDM9
Major 9th Flat FifthGMaj9b5
Major EleventhDM11
Minor 7thF#m7
Minor 7th Flat ThirteenthF#m7b13
Minor 9thF#m9
Minor Eleventh Flat NineF#m11b9
Minor Six-NineEm6/9
Six-NineA6/9

Associated Scales

This chord can be found in the following scales.

ScaleRoots
DorianE
Dorian b5E
Harmonic MajorD
LocrianC#
Locrian bb7C#
LydianG
Lydian Augmented #2Bb
Lydian b3G
MajorD
MinorB
MixolydianA
Mixolydian b2A
PhrygianF#
Phrygian b4F#

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