Standard
C dominant seventh flat nine sharp eleven · Frets 2–3
C7♭9♯11 guitar chord
What it is
Root
Notes
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Best match1Exact match
How to play C7♭9♯11 on guitar
The most common way, the first shape above: lay your index finger flat across the four strings from the D to the high E at the 2nd fret, your middle finger on the A string at the 3rd fret and your ring finger on the G string at the 3rd fret. Don’t play the low E string.
From the low E string x 3 2 3 2 2 (x: not played, 0: open)
An easier C7♭9♯11
The full shape is a barre chord, hard at first. This one needs no full barre and sounds much the same: your middle finger on the A string at the 3rd fret, your little finger on the D string at the 4th fret, your ring finger on the G string at the 3rd fret and your index finger on the B string at the 2nd fret. Let the high E string ring open. Don’t play the low E string.
x 3 4 3 2 0
C7♭9♯11, the easier shape
StandardOpen position · 5 strings
What notes are in C7♭9♯11?
C7♭9♯11, C dominant seventh flat nine sharp eleven, is C, E, G, B♭, D♭ and F♯: the root (C), the major third (E), the perfect fifth (G), the minor seventh (B♭), the flat ninth (D♭) and the sharp eleventh (F♯). Its formula is 1 3 5 ♭7 ♭9 ♯11.
More C chords on guitar
CbrightCmsadC7the pullCmaj7dreamyCm7mellowCsus2openCsus4openCadd9sweetCdimthe edgeCauguneasyC6sweetCm6bittersweetC9the pullC7sus4openC5rawCm7♭5the edgeCdim7the edgeEvery C chord ›
Dominant seventh flat nine sharp eleven chords in every key
C♯7♭9♯11spicyD7♭9♯11spicyE♭7♭9♯11spicyE7♭9♯11spicyF7♭9♯11spicyF♯7♭9♯11spicyG7♭9♯11spicyA♭7♭9♯11spicyA7♭9♯11spicyB♭7♭9♯11spicyB7♭9♯11spicy
C7♭9♯11 on other instruments
7-string guitar8-string guitarBass5-string bass6-string bass7-string bass8-string bassUkuleleMandolinBanjo