Chord & FretA#sus4 — suspended 4
Also written Bbsus4 — the same chord, spelled the other way.
Notes in A#sus4: A# – D# – E#Formula: 1 – 4 – 5In the formula, the numbers count steps of the major scale starting from the note that names the chord; "b" lowers a half step, "#" raises one — and a slash names the bass note.
In sus4 the third gives way to the fourth, creating a gentle tension that asks to resolve. The F usually falls to E as it returns to the triad.
The same chord on all four instruments
Where to use it: Preparation and resolution to the triad; very common right before an important chord.
Every region of the neck hides more shapes of A#sus4. In Chord & Fret, you check it note by note, playing any shape as an arpeggio; open every variation on the neck, grouped by bass note; and set a capo — the diagrams redraw above it. Start free. Unlock everything with Pro. Plays offline.
See the whole neck in Chord & Fret →Part of the Suspended family.