During the course of his long and varied career in the world’s leading opera houses, British baritone Sir Thomas Allen has developed a special relationship with Mozart’s racy comic opera “Così fan tutte.” Early in his career, he often sang the role of Guglielmo, a callow Neapolitan dude who, along with his buddy Ferrando, decides to test their girlfriends’ fidelity to win a bet.
More recently, Allen has been taking the role of the cynical “old philosopher” Don Alfonso who initiates the bet, being confident that the susceptible young women — who are sisters — will prove fickle. (Alfonso is correct in his assumption.) And now, here in Boston, Allen is going for the trifecta. Not only is he singing the role of Don Alfonso. He is also directing a brand-new fully staged production of “Così” for Boston Lyric Opera, which opens on Friday at the Schubert Theatre for five performances.