The Glyndebourne has announced its upcoming slate for the 2021 season. The festival will open in May with Janáček’s “Kát’a Kabanová,” the first time the opera is presented at the festival in 20 years. Director Damiano Michieletto will make his company debut, leading a production that will be conducted by Robin Ticciati and will star Kateřina Knĕžíková in the title role. {…}