[4] Later, he was mentored by the ethnologist Patrice Coirault, and he attended classes taught by Jacques Chailley with Constantin Brăiloiu.
[4] He subsequently worked for Paul Faucher, where he edited Père Castor, a collection of children's books.
[4] Guilcher began working for the Centre national de la recherche scientifique (CNRS) in 1955.
[4] He later worked for the Musée national des Arts et Traditions Populaires, where he founded a section about dance.
[5] He subsequently served as the director of a research centre at the University of Western Brittany and the School for Advanced Studies in the Social Sciences.