|6||x or F||1st fretfr.||optionalopt.|
Guitar chords in the key of A# or Bb:
Chord Bb7 notes: (F), Bb, F, Ab, D and F.
This chord is played by placing a barre on fret one with your index finger. The note F on the sixth string is not required, but can be played on the 1st fret if needed.
Bb(A#) dominant 7th chord's alternative names: Bbdom7, (Bb septim).
1(A#/Bb), 3(D), 5(F), b7(G#/Ab).