F#+(#11) chord - F# Augmented Fifth Sharp Eleventh added - guitar chord chart
The F# augmented sharp eleven chord, written F#+(#11), is spelled F#, A#, C## and B#: the root, major third, raised fifth and sharp eleventh. F#+(#11) adds the sharp eleventh to an augmented triad, so it has four notes and no seventh.
A scale that covers every chord tone is the F# whole-tone scale, which is where to start when you improvise. Spelling it correctly takes C## and B#, so charts usually prefer the twin spelling Gb+(#11). The sharp eleventh is the note that gives the Lydian mode its character.
To see where each of these intervals falls on the neck, work through intervals on the fretboard.
F# augmented with sharp 11th guitar chord is also written as F#+(#11), F#aug(#11), F#+#11 or F#aug#11.
Notes that compose the F# +(#11) chord:
How the Augmented Fifth Sharp Eleventh added chord is built:
Formula: 1 3 #5 #11
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Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What notes are in F#+(#11)?
F#+(#11) is spelled F#, A#, C## and B#. That gives the root, a major third, a raised fifth and a sharp eleventh. The C## and B# are theoretical spellings.
Is F#+(#11) the same chord as Gb+(#11)?
They are the same sound. Gb+(#11) is spelled Gb, Bb, D and C, with no double accidentals. Charts often prefer that spelling.
Why is F# augmented sharp eleven spelled with B#?
The perfect fourth of F# is B. The sharp eleventh raises it by a semitone, giving B#, which sounds like C. Keeping the letter B shows that it is an eleventh.
Which scale fits F#+(#11)?
The F# Whole-Tone Scale (F#, G#, A#, B#, C##, E) holds all four chord notes. It is a natural choice for a melody over this chord.
