F#13(#9) chord - F# Dominant Thirteen Sharp Ninth - guitar chord chart
Seven notes make up F#13(#9) (F# thirteenth sharp nine): F#, A#, C#, E, G##, B and D#.
The sharp ninth G## sounds like A, a minor third above the root F#, even though it is named as a raised ninth. The F# Half-Whole scale, built from alternating half and whole steps, contains every chord tone except the eleventh B.
From the dominant seventh F#7 (F#, A#, C#, E) the chord grows by adding that raised ninth, the eleventh and the thirteenth D#. As a dominant chord it usually resolves to the chord a fourth above F#.
F# 13th with sharp 9th guitar chord is also written as F#13(#9), F#13#9 or F#13+9.
Notes that compose the F# 13(#9) chord:
Chord Structure:
Formula: 1 3 5 b7 #9 11 13
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Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What notes spell F#13(#9)?
F#13(#9) is F#, A#, C#, E, G##, B and D#. That is the root, major third, perfect fifth, minor seventh, sharp ninth, eleventh and thirteenth.
Is F#13(#9) just another name for Gb13(#9)?
Yes, only the spelling changes. Gb13(#9) uses Gb, Bb, Db, Fb, A, Cb and Eb, a set with no double sharp.
Why does F#13(#9) include G##?
The ninth over F# uses the letter G, and the major ninth is G#. The sharp ninth raises it another half step to G##, which sounds like A.
What scale fits F#13(#9)?
The F# half-whole scale covers every chord tone except the eleventh, B. It includes the sharp ninth, G##, and the thirteenth, D#.
