Thank you, Dunlustin - no I haven't heard of them before. From their website, they are very much traditional players, as are all those I have come across so far. The diatonic and Breton dancing seem to go together and most of it seems to happen further west than us. Finistère, the most westerly department in France, is far more into the accordion and traditional dancing than our area (sadly). But then Saint Malo is the home of the Corsaires, who pirated for the king and the songs and tunes around here are very much in that theme, or fishing. England also had its corsaires - men like Drake and Raleigh collected booty for Queen Elizabeth I (and no doubt kept plenty for themselves !)