Construction: Root, Major 3rd, Augmented 4th, Perfect 5th, Minor 7th
It is a dominant 7th chord with an augmented (sharpened) 11th, creating a distinctive tritone clash, giving it a tense, tritone-driven character central to the Lydian Dominant sound in jazz and fusion
Fingering: RH 1-2-3-4-5, LH 5-4-3-2-1
=G♭ Dominant 7th Sharp 11›
This is the same chord as G♭ Dominant 7th Sharp 11: the same keys on the keyboard, spelled with flats.
F♯ Dominant 7th Sharp 11 = Root + Major 3rd + Diminished 5th + Perfect 5th + Minor 7th = F♯, A♯, B♯, C♯, E
Note
Interval
Degree
F♯
Root
1
A♯
Major 3rd
3
B♯
Diminished 5th
♭5
C♯
Perfect 5th
5
E
Minor 7th
♭7
Fingering
Note
Key color
Right hand
Left hand
F♯
black
thumb (1)
little finger (5)
A♯
black
index finger (2)
ring finger (4)
B♯
white
middle finger (3)
middle finger (3)
C♯
black
ring finger (4)
index finger (2)
E
white
little finger (5)
thumb (1)
Right hand: thumb (1) on F♯, index finger (2) on A♯, middle finger (3) on B♯, ring finger (4) on C♯, little finger (5) on E.
Left hand: little finger (5) on F♯, ring finger (4) on A♯, middle finger (3) on B♯, index finger (2) on C♯, thumb (1) on E.
Key Signature
A dominant chord points home to the key a fifth below its root: the F♯ Dominant 7th Sharp 11 is the V (dominant) of B Major, so the relevant key signature is that key's — 5 sharps (F♯, C♯, G♯, D♯, A♯). Spelled as a scale, these notes are F# Mixolydian.
F♯C♯G♯D♯A♯
Order of sharps
Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.
F♯C♯G♯D♯A♯E♯B♯
Mnemonic:Father Charles Goes Down And Ends Battle
Chords in the Key of F♯ Major
These are the triads built on each degree of F♯ Major: