F Dominant Thirteen Sharp Ninth (F13(#9)) chords on guitar
Seven notes make up F13(#9) (F thirteenth sharp nine): F, A, C, Eb, G#, Bb and D.
The raised ninth G# sits a half step below the major third A, so the chord holds major and minor third colours together. The F Half-Whole scale, built from alternating half and whole steps, contains every chord tone except the eleventh Bb.
Rooted on F, the chord can resolve to the chord a fourth above, Bb. The major third A and the minor seventh Eb form the tritone that drives that resolution, while D is the thirteenth.
F 13th with sharp 9th guitar chord is also written as F13(#9), F13#9 or F13+9.
F 13(#9) chord Notes:
Chord structure of the Dominant Thirteen Sharp Ninth chord:
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 are the notes in F13(#9)?
F13(#9) is F, A, C, Eb, G#, Bb and D. That is the root, major third, perfect fifth, minor seventh, sharp ninth, eleventh and thirteenth.
Which scale matches F13(#9)?
The F half-whole scale has every chord tone except the eleventh, Bb. It includes G#, the sharp ninth, and D, the thirteenth.
What is the G# in F13(#9)?
It is the sharp ninth. The major ninth over F is G, and raising it by a half step gives G#, which sounds like Ab.
What do the 13 and #9 add to F13(#9)?
The 13 adds D, a major sixth raised an octave, while the #9 adds G#. Together with Eb they turn a basic dominant chord into a richly colored one.
