Rienzi rocks Jordan Hall
The musical forces required by Rienzi. Photo: Kathy Wittman.Every day, I suppose, something surprising happens. But surely the brief local bow (one night only!) of Wagner's titanic Rienzi counts as the most improbable event of the musical season.And the fact that the spanking-new Odyssey Opera, under the baton of Gil Rose (still on the rebound from the collapse of his last gig at Opera Boston) b…