G'day Peter T,

I don't think the choice between Piano keyboard and Chromatica (Continental Chromatic button accordion) would make much difference to the playing of the sort of songs you seek. (The Chromatica may have an edge in very fast, complicated, music ... but not here.)

I did see a number of books covering the popular French music of this sort ... but the bloke who had them:

a) managed to select them from secondhand stuff that went through his "Accordions 'n Folk" shop,

b) had looked hard for them, to support his regular gigs with Alliance Français, in Sydney,

c) then had to go looking for the older, "traditional" stuff the Alliance Français really wanted!

Unfortunately, he has, since, moved some 530 kilometres up the New South Wales North Coast, but such books should be hanging round the old & tatty section of the secondhand music book market (somewhere well below Lady of Spain) ...

Regard(les)s,

Bob