A♭7♯5 7-string bass chord

How to play A♭7♯5 on 7-string bass

The most common way, the first shape above: your index finger on the E string at the 4th fret, your middle finger on the D string at the 4th fret, your little finger on the G string at the 5th fret and your ring finger on the C string at the 4th fret. Don’t play the B, A and F strings.

From the B string x 4 x 4 5 4 x (x: not played, 0: open)

What notes are in A♭7♯5?

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