You could say there's a mix of B/C and C#/D style playing on the record, with C#/D slightly predominating I would say.
Or you could just say this is what happens when players get really good at the box - they are equally at home in both ranges of keys and play a tune in one or the other to suit their mood, or the tune. On some of the sets Damien switches from "C#/D fingering" to "B/C fingering" for an unusual key change (e.g. The watchmaker in Gm rather than Am, followed by Callaghan's ("Now she's purring") in the usual G.
Must be nice to have that complete freedom... something to work towards anyway.
The five tracks on four-voice Quebec-style melodeon I could have done without, mainly because I hear enough of that style around here pretty regularly. He makes a very convincing job of the Quebec style though and I must say that the two Irish reels he plays on the one-row to finish the album make a glorious racket.
The real showpiece is the Edith Piaf waltz, La Foule, on which Damien succeeds in creating the illusion that he's playing, not a 2-row diatonic but a big continental chromatic box - a real tour de force. (Even if it's a bit of an old chestnut - my wife, a Frenchwoman, laughed out loud as soon as she heard the first couple of bars, and then proceeded to sing along with the whole thing...).
Funny thing about waltzes - when I first started the box I thought that trying to play reels on it was madness. (Another beginner asked me after a few weeks which I found easier, jigs or reels, and I replied, waltzes!) Three years on reels are no longer impossible, but I find that every box player who has mastered them needs some fancy waltzes to test their virtuosity. Rather like the way top fiddlers feel obliged to play Sean Maguire style hornpipes, reels no longer presenting a challenge. Except that I much prefer the waltzes...
Back to reels - I'm very partial to the tune Miss Langfort so here's a snippet of Damien playing it, followed by two other box players. The last one should be easy to guess, but who's the one in the middle? Don't answer if you have the old LP it was taken from....
Three squeezes on Miss Langfort.