No, not Patty, Maxene, and LaVerne. The Three Singing Sisters poised to set Seattle Opera afire are the Italian-American Ginger, Marina, and Miriam Costa-Jackson, whose credits include star-studded galas opposite Andrea Bocelli and Dmitri Hvorostovsky. That’s fast company. Big-sister Ginger’s an A-list Carmen. Can’t promise “Boogie Woogie Bugle Boy,” but the ads mention opera, pop, showtunes, and Neapolitan. —M.G.