Composed by Charlie Chaplin for his film Modern Times:
Felix Arndt's 1915 novelty song, here rendered even more noveltyish for the jawdropping short film Multiple Sidosis.
Birkin sang some of this song, written by her ex-husband Serge Gainsbourg, in Alain Resnais's 1997 lip-sync musical On connait la chanson, one of my favorite films. The clip is at 4:27. This is the only moment in the entire film in which an actor lip-syncs to her own voice.