thanks for your interesting replys . you have given this idea more considered thought than perhaps i had. i accept that playing in extra keys causes problems on the left end of the instrument . i am trying to sidestep that one,as it is a topic that as been aired at length.
the extra work on new reed blocks ,and cost ,makes this idea a novelty and not a mainstream possibility. i was interested in boxcall`s reply as it seems very positive. he is considering trying out the principle on a spare box. i would be interested in the out come, if you go ahead.
theo`s practical approach that if you are going to add extra reeds you might as well add extra buttons as well. this mirrors the way melodeons have developed over time. i found my thoughts following this well worn path which leads to an extra half row of notes. and then a full row,and then,,,,,?
i did just wonder if there might be a niche in the cajan world. the authentic traditional LOOK of the one row may be all important. having extra notes secreted under the hood,ready to be switched into play,might be attractive to some.
many thanks for your opinions. brian.