Thanks for that link, Tom. That's a brilliant tone from a great player. I'd heard of her before but the name sort of never connected me to Brazil.
Tried Sere in Festa, but not enough accordion content and I obviously couldn't understand the comperes.
Have you tried this one?
You select the type of track you want and you get transferred onto You Tube. The spartiti are sometimes incorporated into the video so you can play as you listen (if you're good enough!)
I believe the streaming site I mentioned has been taken down for some reason, as I cannot find it.
French accordions are not very common outside of France at all, except in Portugal, where there are a lot of Cavagnolo CBAs with what appears to be special Portuguese tuning. Neither Cavagnolo nor Maugein make very many PAs at all and they are about the only French mainstream makers left. There are one or two smaller makers who supply the folk scene, as well as a make called "Gadji" who supply manouche and jazz type accordions, the latter of which have an altered bass configuration, which they reckon is better suited to jazz playing the the normal Stradella bass.
In my experience the Italian built models for the French market are better than Cavagnolo, although Maugein are quite solidly built with a reasonable tone. Cavagnolos have a sort of fragile feel to them which I'm not keen on, although you won't really get a more French sound out of any other make. Maugein have nearly gone under several times in the last few years. Their instruments are just too dear for all but pro players, and Cavagnolo have gone down the digital road, so they haven't developed their acoustic range very much lately.
New Italian made boxes are often a couple of grand cheaper than French ones, and a lot of youngsters seem to be favouring Hohner (France) which are made by Mengascini. Don't know how long they'll still be making accordions in France. I believe Maugein were down to less than 100 new instruments per year lately, with Cavagnolo on maybe double that, but they're not very forthright about the situation.
Time will tell.