Cm7♭5♭9 8-string bass chord

How to play Cm7♭5♭9 on 8-string bass

The most common way, the first shape above: lay your index finger flat across the six strings from the E to the F at the 8th fret, your ring finger on the A string at the 9th fret and your little finger on the C string at the 10th fret. Don’t play the F♯ and B strings.

From the F♯ string x x 8 9 8 8 10 8 (x: not played, 0: open)

What notes are in Cm7♭5♭9?

Cm7♭5♭9, C half-diminished seventh flat nine, is C, E♭, G♭, B♭ and D♭: the root (C), the minor third (E♭), the diminished fifth (G♭), the minor seventh (B♭) and the flat ninth (D♭). Its formula is 1 ♭3 ♭5 ♭7 ♭9.