C7♭9 7-string guitar chord

How to play C7♭9 on 7-string guitar

The most common way, the first shape above: your ring finger on the A string at the 3rd fret, your index finger on the D string at the 2nd fret, your little finger on the G string at the 3rd fret and your middle finger on the high B string at the 2nd fret. Let the high E string ring open. Don’t play the low B and low E strings.

From the low B string x x 3 2 3 2 0 (x: not played, 0: open)

What notes are in C7♭9?

C7♭9, C dominant seventh flat nine, is C, E, G, B♭ and D♭: the root (C), the major third (E), the perfect fifth (G), the minor seventh (B♭) and the flat ninth (D♭). Its formula is 1 3 5 ♭7 ♭9.