C7♭13 7-string bass chord

How to play C7♭13 on 7-string bass

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

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

What notes are in C7♭13?

C7♭13, C dominant seventh flat thirteen, is C, E, G, B♭ and A♭: the root (C), the major third (E), the perfect fifth (G), the minor seventh (B♭) and the flat thirteenth (A♭). Its formula is 1 3 5 ♭7 ♭13.