B7(add13) 8-string bass chord

How to play B7(add13) on 8-string bass

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

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

What notes are in B7(add13)?

B7(add13), B dominant seventh added thirteenth, is B, D♯, F♯, A and G♯: the root (B), the major third (D♯), the perfect fifth (F♯), the minor seventh (A) and the thirteenth (G♯). Its formula is 1 3 5 ♭7 13.