C7♯9 8-string bass chord

How to play C7♯9 on 8-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 and your ring finger on the D string at the 1st fret. Let the E, G and C strings ring open. Don’t play the F♯ and F strings.

From the F♯ string x 1 0 1 1 0 0 x (x: not played, 0: open)

What notes are in C7♯9?

C7♯9, C dominant seventh sharp 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 sharp ninth (D♯). Its formula is 1 3 5 ♭7 ♯9.