Imagine Armida, Handel’s Saracen sorceress, performing her breakneck coloraturas in a black figure-hugging rubber dress, beating her insubordinate furies into submission with a cane, suspending a captive Rinaldo in chains from the ceiling of her dungeon. Mozart’s peasant girl Zerlina, meanwhile, is tying up and blindfolding her fiancé to seduce him out of his jealousy of Don Giovanni. And how about Wagner’s wizard, Klingsor, ensnaring his choir of flower...