Bro Gozh ma Zadoù (Breton for Old Land of My Fathers) is the national anthem of Brittany. It is sung to the same tune as that of the national anthem of Wales, Hen Wlad Fy Nhadau, and has similar words. The Cornish anthem, Bro Goth Agan Tasow, is also sung to the same tune.
The Breton lyrics are the creation of François Jaffrennou in 1897, and the music was that composed by the Welsh James James for Hen Wlad Fy Nhadau. The new song was first published in 1898, and circulated as Henvelidigez ("Adaptation"). It was chosen as national anthem (and a song to celebrate friendship between the Welsh and Bretons) in 1903, at a Congress of the Union Régionaliste Bretonne held in Lesneven. Maurice Duhamel adapted it for the piano, and it was first recorded by Pathé in 1910.
You hear here the version of Tri Yann