A♭maj7♯5 8-string bass chord

How to play A♭maj7♯5 on 8-string bass

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

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

What notes are in A♭maj7♯5?

A♭maj7♯5, A♭ augmented major seventh, is A♭, C, E and G: the root (A♭), the major third (C), the augmented fifth (E) and the major seventh (G). Its formula is 1 3 ♯5 7.