In one spectacular, breathtaking amalgam of a multitude of glorious things (Aznavour, Godard, Belmondo, Anna Karina, Paris, afternoon apéritifs, the 1960s, jukeboxes, white fur collars, idiosyncratic and adorable Nouvelle Vague filmmaking, the word "bigoudis", Belmondo, Anna Karina, Aznavour...) here is Tu t'laisses aller sung by...drum roll... Charles Aznavour!
From the film Une Femme est Une Femme (1961).