A♭7♭9♯9 8-string bass chord

How to play A♭7♭9♯9 on 8-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 1st fret, your middle finger on the F♯ string at the 2nd fret, your ring finger on the E string at the 2nd fret, your ring finger on the A string at the 2nd fret and your little finger on the G string at the 2nd fret. Don’t play the C and F strings.

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

What notes are in A♭7♭9♯9?

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