seems a reasonable way of diferentiating between the two - this makes the hohner trichord a possible for either catagory as some have 'melodeon' bass but th;e majority seem to have 12 accordion(stradella)bass. Just goes to show it all depends where you live!

as regards guest mr happy's comments re the chromatic pussh pull boxes requiring different fingering to a true diatonic (eg DG) this is of course only true when playing on the row. as soon as keys other than t;he 'home 'keys are attempted, either with extra accidentals or by faking them the whole fingering & bellows control system changes and it is at htis point that theBCC#' starts to show advantages! many may feel differently about this but have they honestly given th;e BCC# a fair trial!

don't ;just readd this - share your views with; the rest of us

cheers
bb