B♭m7♭9 6-string bass chord

How to play B♭m7♭9 on 6-string bass

The most common way, the first shape above: your middle finger on the B string at the 11th fret, your ring finger on the A string at the 11th fret, your ring finger on the D string at the 11th fret, your index finger on the G string at the 10th fret and your little finger on the C string at the 11th fret. Don’t play the E string.

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

What notes are in B♭m7♭9?

B♭m7♭9, B♭ minor seventh flat nine, is B♭, D♭, F, A♭ and C♭: the root (B♭), the minor third (D♭), the perfect fifth (F), the minor seventh (A♭) and the flat ninth (C♭). Its formula is 1 ♭3 5 ♭7 ♭9.