B♭13♭9 8-string bass chord

How to play B♭13♭9 on 8-string bass

The most common way, the first shape above: lay your index finger flat across the six strings from the F♯ to the G at the 4th fret, your middle finger on the A string at the 5th fret, your ring finger on the D string at the 5th fret and your little finger on the C string at the 5th fret. Don’t play the B and F strings.

From the F♯ string 4 x 4 5 5 4 5 x (x: not played, 0: open)

What notes are in B♭13♭9?

B♭13♭9, B♭ thirteenth flat nine, is B♭, D, F, A♭, C♭ and G: the root (B♭), the major third (D), the perfect fifth (F), the minor seventh (A♭), the flat ninth (C♭) and the thirteenth (G). Its formula is 1 3 5 ♭7 ♭9 13.