Jean-Paul Belmondo had to go and do military service before he could record the soundtrack so his character's voice is that of the director, Jean-Luc Godard.
Jean Luc Goddard made it as an homage to Jean Cocteau on a budget of five and a half thousand francs.
The director had to dub over the sound track of his main actor, Belmondo, because the star was away on duty in Algeria during final editing.This was not too disconcerting because Belmondo was not yet a well known actor so audiences wouldn,t have realized it was a totally different voice.