A7(add13) 7-string bass chord

How to play A7(add13) on 7-string bass

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

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

What notes are in A7(add13)?

A7(add13), A dominant seventh added thirteenth, is A, C♯, E, G and F♯: the root (A), the major third (C♯), the perfect fifth (E), the minor seventh (G) and the thirteenth (F♯). Its formula is 1 3 5 ♭7 13.