F# Added 9th

Symbols:F#add9, F#Majadd9, F#Madd9
Scale Degree Formula:1-3-5-9
Interval Stack:M3 + m3 + P5
Notes:F#, Bb, C#, G#
Hear this chord:▸ Guitar

Construction

Using the scale degree formula, we first start with the F# 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 1-3-5-9, 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 (F#), then move our first interval (M3), which brings us to our second note in the chord (Bb). 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:
F#1G♭2G#2A♭3Bb3B4C♭5C#5D#5D#6E♭7F7F#8G♭9G#9M3m3P5

Similar Chords

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

Chord TypeChords
7th Suspended FourthG#7sus, D#7sus, C#7sus
7th Suspended SecondG#7sus2, F#7sus2
Augmented Major 7thD+Maj7
Diminished Major 7thGdimMaj7
Dominant 7thF#7
Dominant 7th Sharp FifthBb7#5
Dominant 7th Sharp Five Sharp 9thBb7#5#9
Dominant 9thF#9
Half-Diminished 7thBbm7(b5)
MajorF#
Major 2ndF#2
Major 6thF#M6, C#M6
Major 7thF#M7
Major 7th Flat FifthDMaj7b5
Major 9thF#M9
Major Added 11thF#add11, C#add11
Minor 2ndF#m2
Minor 6thC#m6
Minor 7thD#m7, Bbm7
Minor 7th Flat ThirteenthBbm7b13
Minor Added 11thD#madd11, C#madd11
Minor Added 9thF#madd9
Six-NineF#6/9
Suspended FourthC#sus
Suspended SecondF#sus2

Associated Scales

This chord can be found in the following scales.

ScaleRoots
BluesD#
Blues MajorC#
Blues MinorBb
DorianD#, C#, G#
Dorian b5G#
Harmonic MajorF#
LocrianF, C, Bb
Locrian bb7F
LydianE, B, F#
Lydian Augmented #2D
Lydian b3B
MajorC#, B, F#
Major PentatonicF#
MinorD#, Bb, G#
Minor PentatonicD#
MixolydianC#, G#, F#
Mixolydian b2C#
PhrygianF, D#, Bb
Phrygian b4Bb
SuspendedG#

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