C♯+♯9C♯ Augmented Sharp 9th
DRoot
F♯tone
A♯tone
Ftone
Formula ♭2 · 4 · 6 · 3 · Notes D · F♯ · A♯ · F
How to play it
C♯+♯9 fingering positions
Open D Tuning (DADF♯AD) · Capo 3, low E on the left. Each dot is colour-coded by note — the ringed dot is the root. Numbers below show the fret per string (x = muted).








Read it as tab
C♯+♯9 guitar tab
The same voicings in tablature — high e on top, low E on the bottom. Each fret number is colour-coded by note; the ringed number is the root, × means don’t play that string.








Sound
How C♯+♯9 sounds
Consonance
1/ 5
Brightness
DarkBright
Character
Moods & genres
Moods
stridentunstable
Genres
experimental
Theory
Notes & relationships
NotesD · F♯ · A♯ · F
Formula (scale degrees)♭2 · 4 · 6 · 3
Explore
More ways to play C♯ Augmented Sharp 9th
Browse the rest of the C♯ chords in this tuning, or open C♯+♯9 in the app for every voicing.
C♯+♯9 in other tunings:
See & hear C♯+♯9 in Chordology
The app shows every voicing across guitar, piano, bass, banjo and ukulele — in any tuning, with a capo, and you can play every chord back. All offline.
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