I have remained flexible

Anja Silja in conversation with Opernwelt

She hasn’t been on stage for a long time. But Anja Silja has always been too alert and opinionated not to follow current developments in opera critically. A conversation about modern “director’s theater,” historical awareness, good (and not so good) declamation, great conductors, and—of course—the genius of Wieland Wagner.

Ms. Silja, you celebrated your …