It is the very rare occasion that a musical has a book, music AND lyrics all by the same person. Meredith Willson did it all three for The Music Man, but even he had help from Franklin Lacey on the book. No, it takes a very special talent to navigate all three of these components. That’s why Willy Russell’s Blood Brothers has always been a fascinating musical for me. It is all of one voice, and the epic tale of the Johnstone twins is a thrilling soap opera steeped in superstition, pop music, tragedy and humor.