Guitar chords in the key of A# or Bb:
Chord Bb (3rd fret) v.2 notes: Bb, D, F, Bb and D. You should not play the 1st string.
This chord is played by placing a barre on fret three with your index finger.
Bb(A#) major chord's alternative names: BbM, Bbmaj, Si bemol major, Bb dur, A#M, A#maj.
1(A#/Bb), 3(D), 5(F).