Ed Meza @edmezavar Celebrated actor and singer Charlotte Gainsbourg, speaking to an audience at the Zurich Film Festival, shared her experiences filming Celyn Jones and Tom Stern’s “The Almond and the Seahorse,” the valuable instructions received from Lars von Trier, and the challenges of shooting a documentary about mother Jane Birkin. Based on the play of the same name by Kaite O’Reilly, who wrote the screenplay with Jones, “The Almond and the Seahorse,” which screens in Zurich’s Gala Premieres section, revolves around two couples struggling with severe brain injuries. Toni (Gainsbourg) is dealing with her partner Gwen (Trine Dyrholm), who no longer is the same person that she was before. She finds support in Sarah (Rebel Wilson), whose husband Joe (Jones) is suffering from a similar brain injury.