[1][2] Alongside Étienne Rivoallan [fr], he formed a group of sonneurs dedicated to the revival of Breton music after World War II.

Cadoudal taught Rivoallan how to play the bombard and they participated in a Fest Noz, leading to the creation of the Bagad Bourbriac in 1953.

[4] Following Rivoallan's accidental death in 1961,[7] Cadoudal won that year's Bagadoù National Championship alongside Daniel Philippe.

[3] He settled down and became a sheep breeder in Brennilis, but continued to follow the Breton musical scene closely.

He also advocated for peasant agriculture and fought against environmental struggles, founding the Association Bevañ e Menez Are.