Sommarnattens leende - Smiles of a Summer's Night (1955)

A "romantic comedy" by Ingmar Bergman. How, you might wonder, does a romantic comedy by Ingmar Bergman look? Oh, it's easy. Do keep the deep thoughts and concerned people, even the old wise ones, even the mean and the young desperate ones, just have them all laugh at each other; also set up some coincidences (my favourite scene is the one where trying to hang himself on an ill-chosen piece of tube, the son falls against the hidden knob that causes his secret love aka wife of his father, angelically sleeping in her bed, to slide into the room) --- and you're all set.