Non si riesce a trovare molto online sui due cantanti, ma penso siano loro:
Pôtr-Yann
Pôtr-Loeiz
Su questo sito, in inglese, si dice che sono due pseudonimi:
"The authors of the texts frequently use pseudonyms. Examples of this type of ballad dealing with the «remembrement rural» are Son an T.A.C.O. and Son an displanterien mein-bonn, both composed in 1974 by Pôtr Yann and sung by Pôtr Loeiz (two pseudonyms) on a record specially devoted to the issue of the levelling of the banks, «Nann d’an T.A.C.O» (Disque Mouez Breiz 45147).[7] Son an displanterien mein-bonn was still being sung at dances at the end of the decade, with a slightly modified text reflecting the relative success of the movement."
Anjela Duval and the traditional Breton ballad - Françoise H.M. Le Saux - Anjela Duval