Now Paul tells us:
> To make the tune work in ABC notation, only the As are upper-case.
Hmm -- if the bs are lower case, that would give us a strange-sounding tune, I
think, and they wouldn't be in the same octave, either... so I will conclude
that *none* of these will have "b" as an answer (hmmm...) Either that or you
meant that the As *and* Bs are upper case?
Looking forward to those Abcs for "Stacking the Deck"...