C7♭9C Dominant 7th Flat 9th
CRoot
Etone
Gtone
A♯tone
C♯tone
Formula 1 · 3 · 5 · ♭7 · ♭2 · Notes C · E · G · A♯ · C♯
How to play it
C7♭9 fingering positions
Open E Tuning (EBEG♯BE), 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
C7♭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 C7♭9 sounds
Consonance
2/ 5
Brightness
DarkBright
Character
Moods & genres
Moods
tensedramaticexotic
Genres
jazzclassicallatin
Theory
Notes & relationships
NotesC · E · G · A♯ · C♯
Formula (scale degrees)1 · 3 · 5 · ♭7 · ♭2
Explore
More ways to play C Dominant 7th Flat 9th
Browse the rest of the C chords in this tuning, or open C7♭9 in the app for every voicing.
C7♭9 in other tunings:
See & hear C7♭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.
Hear every chordMore voicingsEvery tuning & capoWorks offline