B♭7♭9♯11 6-string bass chord

How to play B♭7♭9♯11 on 6-string bass

The most common way, the first shape above: lay your index finger flat across the four strings from the A to the C at the 8th fret, your little finger on the B string at the 11th fret, your ring finger on the E string at the 10th fret, your middle finger on the D string at the 9th fret and your middle finger on the G string at the 9th fret.

From the B string 11 10 8 9 9 8 (x: not played, 0: open)

What notes are in B♭7♭9♯11?

B♭7♭9♯11, B♭ dominant seventh flat nine sharp eleven, is B♭, D, F, A♭, C♭ and E: the root (B♭), the major third (D), the perfect fifth (F), the minor seventh (A♭), the flat ninth (C♭) and the sharp eleventh (E). Its formula is 1 3 5 ♭7 ♭9 ♯11.