C7♭9 7-string bass chord

How to play C7♭9 on 7-string bass

The most common way, the first shape above: your index finger on the B string at the 1st fret, your middle finger on the A string at the 1st fret, your little finger on the D string at the 2nd fret and your ring finger on the C string at the 1st fret. Let the E and G strings ring open. Don’t play the F string.

From the B string 1 0 1 2 0 1 x (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.