Cadd♭13 7-string bass chord

How to play Cadd♭13 on 7-string bass

The most common way, the first shape above: your ring finger on the A string at the 3rd fret, your index finger on the D string at the 2nd fret and your little finger on the F string at the 3rd fret. Let the G and C strings ring open. Don’t play the B and E strings.

From the B string x x 3 2 0 0 3 (x: not played, 0: open)

What notes are in Cadd♭13?

Cadd♭13, C major added flat thirteen, is C, E, G and A♭: the root (C), the major third (E), the perfect fifth (G) and the flat thirteenth (A♭). Its formula is 1 3 5 ♭13.