The opera house’s new streaming service provides live and on-demand performances, as well as extras like backstage glimpses and educational programs.

Starting in March, Ambroise Thomas’s version of the Shakespearean tragedy will be revived at the Opéra Bastille for the first time since 1938.

In the new year, the Vienna Philharmonic will pay tribute to more than a dozen of its members who were ousted, exiled and killed during...