 Kosma was a native of Hungary who was introduced to Prévert in Paris.They collaborated on the song "" ("The Dead Leaves") for the 1946 film "Les Portes de la nuit (Gates of the Night)" where it was sung by Irène Joachim.Kosma was influenced by a piece of ballet music, "Rendez-vous" written for Roland Petit, which was itself borrowed partially from "Poème d'octobre" by Jules Massenet.