A♭13 7-string bass chord

How to play A♭13 on 7-string bass

The most common way, the first shape above: lay your index finger flat across the four strings from the A to the C at the 3rd fret, your ring finger on the E string at the 4th fret and your little finger on the D string at the 4th fret. Let the F string ring open. Don’t play the B string.

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

What notes are in A♭13?

A♭13, A♭ dominant thirteenth, is A♭, C, E♭, G♭, B♭ and F: the root (A♭), the major third (C), the perfect fifth (E♭), the minor seventh (G♭), the ninth (B♭) and the thirteenth (F). Its formula is 1 3 5 ♭7 9 13.