B♭11 7-string bass chord

How to play B♭11 on 7-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 G string at the 1st fret. Let the C and F strings ring open. Don’t play the B and E strings.

From the B string x x 1 1 1 0 0 (x: not played, 0: open)

What notes are in B♭11?

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