“I sincerely hate musicals,” declares Karla Sofía Gascón in English, only for her interpreter to query if that’s what she meant to say. “No, I hate musicals,” Gascón insists. “There’s only one musical I love, and it’s called Emilia Pérez.” Gascón, a 52-year-old Spanish actress, is speaking to me a day before Emilia Pérez premieres at the London Film Festival, and she’s in an upbeat mood, even high-fiving me athellip;

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