C♯7♯9♭5 7-string bass chord

How to play C♯7♯9♭5 on 7-string bass

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

From the B string 2 1 2 2 0 x x (x: not played, 0: open)

What notes are in C♯7♯9♭5?

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