(Credit: Washington National Opera) The Washington National Opera has announced its 2020–2021 season offering up some ambitious repertoire. The season with WNO’s new production of Beethoven’s “Fidelio.” Robert Spano makes his WNO debut conducting a cast that includes Elza van den Heever, Brandon Jovanovich, Brian Mulligan, Ryan Speedo Green, Joshua Blue, and Eric Owens. Performance Dates: Oct. 24–Nov. 9, 202o {…}