B♭13♯9 5-string bass chord

How to play B♭13♯9 on 5-string bass

The most common way, the first shape above: your middle finger on the B string at the 11th fret, your index finger on the E string at the 10th fret, your ring finger on the A string at the 11th fret, your ring finger on the D string at the 11th fret and your little finger on the G string at the 12th fret.

From the B string 11 10 11 11 12 (x: not played, 0: open)

What notes are in B♭13♯9?

B♭13♯9, B♭ thirteenth sharp 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 sharp ninth (C♯) and the thirteenth (G). Its formula is 1 3 5 ♭7 ♯9 13.