Gilles Grangier is part of those "old school" directors still waiting to be rediscovered,at least his thrillers which were his forte in the fifties ("Danger De Mort""Trois Jours A Vivre" "Echec Au Porteur" "Le Désordre et la Nuit" notably).Unfortunately,as the title indicates (=just for singing),it is a musical;Grangier had already directed crooner Georges Guétary in " Trente Et Quarante "with passable results.