C♯m9♭5 6-string bass chord

How to play C♯m9♭5 on 6-string bass

The most common way, the first shape above: lay your index finger flat across the four strings from the B to the D at the 2nd fret, your ring finger on the E string at the 3rd fret and your little finger on the C string at the 3rd fret. Let the G string ring open.

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

What notes are in C♯m9♭5?

C♯m9♭5, C♯ half-diminished ninth, is C♯, E, G, B and D♯: the root (C♯), the minor third (E), the diminished fifth (G), the minor seventh (B) and the ninth (D♯). Its formula is 1 ♭3 ♭5 ♭7 9.