San Francisco Opera’s “Don Giovanni” brings us bass-baritones with gusto, sopranos with flair, a tenor who pleads his case with feeling, and an opera that never ceases to amaze. Opening SFO’s 2017 summer season, Jacopo Spirei, in his SFO debut, offers us the ever satisfying chestnut in as provocative and seductive a production as the Don himself. Who can {…}