I should have added 'relatively speaking' in the above, since of course the home keys of the average saxophone (as opposed to those of the flute) are not those of most Irish dance music. Having never gone beyond making inchoate parping noises on a sax, I don't know what the practical technicalities are, though I doubt if they would present too much difficulty for a reasonably accomplished player. It ought to be easier than doing the same thing on clarinet, which requires more complex fingering when moving between octaves.

Apologies for the digression. Back to concertinas.