B♭sus4 (B♭sus4)

Also called A♯sus4 (A♯sus4).

The third is replaced by the fourth, so the chord is neither major nor minor. The fourth usually pulls back toward the major chord.

There’s no open shape: it’s played as a barre chord, starting at the 1st fret. It’s mostly used to add movement to B♭ major, which it resolves to.

Chord diagram

e|--1--|
B|--4--|
G|--3--|
D|--3--|
A|--1--|
E|--x--|

e|--6--|
B|--6--|
G|--8--|
D|--8--|
A|--8--|
E|--6--|

Capo tip: put the capo at the 1st fret and play the Asus4 shape: you hear B♭sus4, with no barre.The capo

The chords in its key, the ones you hear most often around B♭sus4.

e|--1--|
B|--3--|
G|--3--|
D|--3--|
A|--1--|
E|--x--|

e|--6--|
B|--8--|
G|--8--|
D|--8--|
A|--6--|
E|--x--|

e|--1--|
B|--1--|
G|--2--|
D|--3--|
A|--3--|
E|--1--|