The murder of his wife Loulou (Louise-Hélène France) at Candlemas in 1975, changed his style to a more humanist one. That night he wrote an open letter analyzing the guilt of the society that put the weapon in the hands of assassins, along with a call to "reforest the human soul" with "love, friendship and persuasion". After this tragedy, he traveled, particularly in Quebec and he strengthened his ties with French speakers' singers culture.