The F♯ Dominant 7th Sharp 11 chord (F♯7♯11) contains the notes F♯, A♯, B♯, C♯, and E. Its interval formula is R-M3-A4-P5-m7. A dominant 7th with a raised 11th — Lydian dominant color, common in jazz fusion and Steely Dan.
=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.
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F♯7♯11
The F♯ Dominant 7th Sharp 11 chord is a five-note chord made up of F♯, A♯, B♯, C♯, and E. It is built from a root, major third, augmented fourth, perfect fifth, and minor seventh.
Construction
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
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 B Major
These are the triads built on each degree of the B major scale:
Keep going with the Dominant 7th Sharp 11 chord — these pages cover the underlying theory, the connected reference material, and the practice tools that work with this chord.
The note names, intervals, fingering, and harmony on this chord page are grounded in the following sources. Public domain treatises and scores are linked to their full text; primary data is piano.org's own interval-derived reference dataset — continuously maintained and human-verified, with no fixed publication date.