B♭aug 7-string guitar chord

How to play B♭aug on 7-string guitar

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

From the low B string x x 1 0 3 3 2 (x: not played, 0: open)

What notes are in B♭aug?

B♭aug, B♭ augmented, is B♭, D and F♯: the root (B♭), the major third (D) and the augmented fifth (F♯). Its formula is 1 3 ♯5.

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

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