Unfortunately, no one yet has named a Breton Hurdy Gurdy artist on this thread (!) I'm not saying this to be snotty; it's actually very hard to find Breton Hurdy-Gurdy players. That's because the Hurdy Gurdy was on the verge of dying out in Brittany, and only recently was sort of revived. Many musicians blame the diatonic accordion for driving out the H-G from the Breton tradition.

Bands that use H-G in Breton music include:

Kasadenn Les Chiens Jaunes Luskañ

individual musicians include:

Jacqueline Blanchard Pascal Etesse

for an introduction to the tradition, you can get a compilation CD called "Sonneurs de Vielle en Bretagne" available from Armen, at www.armen.net

Good luck!