“Distilling opera to its essence.” Such is the slogan that Heartbeat Opera lives by. Like ninepins, the pooh-bahs of the Big Apple’s operatic commentariat have fallen to their knees over the company’s radical reimaginings of warhorses and unicorns. Tricks and treats promised for this drag-heavy, eco-friendly extravaganza include licks from Vivaldi to Adams by way of Wagner and Bernstein. Watch, too, for “polar baritones.” —M.G.