B♭6(add11) 8-string bass chord

How to play B♭6(add11) on 8-string bass

The most common way, the first shape above: your index finger on the A string at the 1st fret, your middle finger on the D string at the 1st fret and your ring finger on the C string at the 2nd fret. Let the G and F strings ring open. Don’t play the F♯, B and E strings.

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

What notes are in B♭6(add11)?

B♭6(add11), B♭ sixth added eleventh, is B♭, D, F, G and E♭: the root (B♭), the major third (D), the perfect fifth (F), the major sixth (G) and the eleventh (E♭). Its formula is 1 3 5 6 11.