While I expected to enjoy Quad City Music Guild's Mary Poppins on Friday, I didn't anticipate being as mesmerized as I was by this stage adaptation of the Disney film. The movie's songs by Robert and Richard Sherman are there, with additional tunes by George Stiles and Anthony Drewe, and a book by Julian Fellowes that adds elements from P.L. Travers' children's-lit classic. And the result, while three hours long, is an improvement on its cinematic inspiration, with the additional material even more interesting than the familiar story elements.