I quite like laptop harmoniums and am interested in your comment on Indian pitch. I have seen more than once one Indian duo who used to use an instrument somewhat similar to a laptop harmonium (might have been a shruti box, I think) to accompany her singing, but now she uses her i-phone. I infer accordingly that perhaps it is possible to set the pitch on such digital instruments sharp of A=440.

I have consistently argued that the fact that something is "folk" leaves it form-free, so at least in that we agree, but if (that's IF) we are going wrong in what we do with traditional music (not necessarily a synonym for "folk") and if (that's IF) the measure of that is bums on seats then part of the cure is making it accessible. If one speaks only to the immersed and learned and adventurous (not always a happy combination), one does not reach out to those who are not.