According to recent research by Cinemateca Portuguesa (the Portuguese Film Archives), Roger Lion filmed La petite bretonne (1913), a filmed song, produced by Gaumont [fr], now lost. Then, he filmed a series of six filmed songs, "Les Chansons filmées" produced by Georges Lordier [fr], all now lost, except for one: Lune jolie (1917); Musique qui passe, La (1917); Pour faire plaisir (1917), now at Archives françaises du film-CNC (Bois d'Arcy) [fr]; Petite bretonne, La (1918); Plus jolie rêve, Le (1918); Madelon de la victoire, Le (1918). All these films were Silent, Black and White, running at 4 minutes or less.
