Genie,the chord you use A#7 is actually (B flat 7th).Due to artheritic in my wrists I play B flat by barring the 4 string on the 3rd fret and the 1st string on the 6th fret and I use this chord a lot.I also play B the same way except I bar the 1st 4 strings on the 4th fret and the 1st string on the 7th fret.Hope this helps Louie