C♯7(add13) 8-string guitar chord

How to play C♯7(add13) on 8-string guitar

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

From the F♯ string x x x 4 3 3 0 4 (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.