C♯7(add13) 7-string bass chord

How to play C♯7(add13) on 7-string bass

The most common way, the first shape above: your middle finger on the A string at the 4th fret, your index finger on the D string at the 3rd fret, your ring finger on the G string at the 4th fret, your little finger on the C string at the 5th fret and your little finger on the F string at the 5th fret. Don’t play the B and E strings.

From the B string x x 4 3 4 5 5 (x: not played, 0: open)

What notes are in C♯7(add13)?

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