Enchanted April has been around longer than you think. If you know the title, it’s probably as a 1991 prestige picture, with Joan Plowright, Alfred Molina, and a small cast soaking up the Tuscan sun. But it’s based on an old, old novel by one Elizabeth von Arnim, turned first into a 1925 stage comedy, then a 1935 RKO vehicle that did Ann Harding no favors, then the 1991 remake, then a second, enjoyable stage adaptation by Matthew Barber in 2003. All along, it’s curious nobody saw a musical in it: The lush setting, several love stories, and singable emotions might have been ripe material for, say, a 1954 Lerner and Loewe opus. Which is essentially what the adapters Elizabeth Hansen (book and lyrics) and C. Michael Perry (music and lyrics) have attempted—a radically old-fashioned romantic musical.