“Xanadu, the story of a muse come to earth to help open a roller disco, is on Broadway. And while the notoriously misguided film might seem a peculiar choice for resurrection, there is something almost as unusual about those behind it: all six of the musical’s above-the-title producers are Broadway neophytes. With an average age of 34 1/2, the producing team behind ‘Xanadu’ is decades younger than many producers on Broadway.”