The Swiss provocateur Milo Rau’s latest work explores the ethics of voluntary euthanasia with real footage of an assisted suicide.DOUAI, France — A serene woman greets the audience at “Grief & Beauty,” the Swiss theater director Milo Rau’s latest production. As spectators take their seats, she appears on a video screen above the stage, silent, in a red sweater and black-rimmed glasses. Then, minutes into the show, we learn that Johanna, as she is identified, died on Aug. 28 — by choice and in Belgium, where euthanasia is legal.Real footage of Johanna’s death is the macabre centerpiece of “Grief & Beauty,” the second installment in Rau’s “Trilogy of Private Life.” The first, “Familie,” recreated a family’s real-life collective suicide in eerie detail. Like “Familie,” “Grief & Beauty” had its premiere in Ghent, Belgium, where Rau is the artistic director of the NTGent theater. This month, the show traveled to Le Tandem, a playhouse in the northern French city of Douai. Further tour dates are scheduled in France and the Netherlands.“Grief & Beauty” flirts even more closely with the choice to die than “Familie.” Instead of turning the subject matter into a drama, Rau actually shows us the moment a lethal injection killed Johanna. Yet while she is the heart of “Grief & Beauty,” the production barely scratches the surface of her life.Voluntary euthanasia, which is legal in only a handful of countries, has become a subject of fascination for Europe’s experimental theatermakers in recent years. In 2018, the Belgian choreographer Alain Platel also filmed a dying woman and played the footage throughout his 100-minute work “Requiem for L.” The next year, Marcos Ariel Hourmann, a doctor convicted of practicing euthanasia in Spain, where it is illegal, put on an interactive show in which he asked the audience members to judge him.“Grief & Beauty,” like Platel’s production, was created with the consent of everyone involved, and Rau details in an interview in the program the research that went into the production. His team, including the four actors onstage, met with health care workers and bereaved relatives, as well as patients suffering from Alzheimer’s disease. Some of them also visited Johanna last summer, we are told during the show.Princess Isatu Hassan Bangura, who was born in Sierra Leone, in “Grief & Beauty.”Michiel DevijverYet for most of it, Johanna takes a back seat to the actors’ stories. Instead of zeroing in on euthanasia, Rau assembled a motley cast of professionals and amateurs who have all experienced grief, albeit in different ways. Arne de Tremerie talks eloquently about his mother’s multiple sclerosis; Staf Smans, the oldest cast member, recounts the deaths of his sister, mother and daughter in quick succession. Princess Isatu Hassan Bangura, who was born in Sierra Leone, touches on another kind of pain —— that of being exiled and losing, as she puts it, her “African side.”Each of these performers speaks either directly to the auditorium or to a camera positioned to the right of the stage, which relays their monologues on the screen above. In keeping with Rau’s habit of mixing reality with semi-fictional scenes, they then perform vignettes set in an apartment. A kitchen, a bedroom and a bathroom are visible; at one point, an actor mentions that several items in the décor, including a handmade quilt, belonged to Johanna.Here and there, the script returns to her life. We learn that she witnessed the bombing of Rotterdam in the Netherlands during World War II, when she was 4; that she loved classical music; and that she once performed as a singer at NTGent. Out of the hours members of Rau’s team spent with her, it’s not much. Instead, she hovers mostly silently above “Grief & Beauty,” her eyes and expression alive and sympathetic.Before her death is shown, Johanna speaks briefly. “I always said I would go with a smile,” she says, before adding: “I have a lot of sleep to catch up on.” The injection follows.We watch as one of her eyes closes involuntarily, and her breathing becomes halted. In Douai, some around me cried openly. (Euthanasia is illegal in France, but according to an April survey by IFOP, one of the country’s leading polling organizations, 93 percent of French people support it in cases of terminal illness.)“Dido’s Lament” from Henry Purcell’s opera “Dido and Aeneas,” which opens “Grief & Beauty,” returns at this moment, along with more personal anecdotes from the cast. Yet no matter how hard Rau tries to interweave their stories with Johanna’s, her presence is overpowering. She belonged in a production of her own.Death has also long haunted the repertoire of the French director and choreographer Gisèle Vienne. This fall, audiences in France have a chance to revisit those works: The Festival d’Automne à Paris, a prestigious annual event taking place across numerous venues in the French capital, is devoting a retrospective to Vienne. Her latest production, “The Pond,” was presented at the Théâtre Paris-Villette in September, and revivals of several older works are scheduled before the end of the year.“Kindertotenlieder,” created by the French director and choreographer Gisèle Vienne. Mathilde Darel“Kindertotenlieder,” created in 2007, returned this month for four performances at the Centre Pompidou with a new cast — that is, a new human cast, since the stage is mostly populated with highly realistic dolls and robots. When “Kindertotenlieder” starts, it’s difficult to gauge just how many of the hunched-over teenagers in the darkened, snow-covered space are real.When the five actors do move and speak, “Kindertotenlieder” is no less disquieting. Although there is no linear story, the murder of a teenager by one of his peers gives a starting point. When the murdered boy’s ghost, the killer and others talk, it’s often to themselves, and the American writer Dennis Cooper’s text for the production is as chilling as it is over-the-top. (Sample line: “When I grow up, I want to behead your wife and kids.”)While the play’s title, which means “Songs on the Death of Children,” is borrowed from a song cycle by Gustav Mahler, the live music — introduced as a “memorial concert” for the dead boy — is by the duo KTL. To their moody, emo-adjacent songs, slow, violent interactions play out: A doll is strangled; two men kiss before one shoves the other, viciously.In “Kindertotenlieder,” as in “Grief & Beauty,” death is at the fingertips of the living. Neither production is for the faint of heart, but compared with the relentless angst of Vienne’s teenagers, there is relief in watching Johanna say her peaceful goodbye in “Grief & Beauty.” From time to time, reality still manages to be more soothing than fiction. More