Question about Walter's categorisation of the tunes. Jim quotes him as follows:

"Nine times out of ten, I can get an old fashioned ten keyed accordion, German tuned, you can nearly tell what is an old song. Of course, that doesn’t matter what modern songs there is, the bellows always close when that finish, like that. And you go right back to the beginning of the nineteenth and eighteenth [century], they finish this way, pulled out, look."

Box players - what is that telling us about the tunes?

I was once told by a D/G box player, when being encouraged to pick up tunes by ear in a session, that finishing with the bellows extended was a strong pointer to E minor (that included E Dorian). Was Walter suggesting something like that?