A♭aug 8-string bass chord

How to play A♭aug on 8-string bass

The most common way, the first shape above: your middle finger on the F♯ string at the 2nd fret, your little finger on the A string at the 3rd fret, your ring finger on the D string at the 2nd fret and your index finger on the G string at the 1st fret. Let the E and C strings ring open. Don’t play the B and F strings.

From the F♯ string 2 x 0 3 2 1 0 x (x: not played, 0: open)

What notes are in A♭aug?

A♭aug, A♭ augmented, is A♭, C and E: the root (A♭), the major third (C) and the augmented fifth (E). Its formula is 1 3 ♯5.

Why do A♭aug and two other augmented chords have the same notes?

An augmented chord is two major thirds stacked, A♭, C and E, and a third more brings you back to A♭. So A♭aug has the same notes as the augmented chords on C and E.