Denis Noble, an emeritus professor in physiology, has spent his whole life studying heart beat while his own beat at the rhythm of “Se santa”, the Occitan anthem. Founder of a 5 musicians group (he’s a singer himself), he is rehearsing before a concert with his friends. Forty years ago, Denis, a dandy so British, bought a house in Périgord. There, he discovered the language and the music of the “troubadours”.