Chord and FretA#7sus2 — dominant seventh suspended second
Also written Bb7sus2 — the same chord, spelled the other way.
Notes in A#7sus2: A# – B# – E# – G#Formula: 1 – 2 – 5 – b7In 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.
It swaps the third for the second and keeps the minor seventh. Lighter than 7sus4 and less dark than the usual dominant.
The same chord on all four instruments
Where to use it: Open folk and pop accompaniments; a good passing colour before the chord commits.
This is just one shape of A#7sus2. In Chord and 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 and Fret →Part of the Suspended family.