Walerian Borowczyk originally wanted Diptych (1967) to be a documentary on Léon Boyer and his life, but the old man did not talk much and so the project almost ended up being scrapped, but then Borowczyk had the strange idea of a counterpoint, a second part using the song by Tino Rossi, Nadir's Romance, accompanied by color images of kittens and floral arrangements.