Mary Poppins (musical)
Mary Poppins is a musical with music and lyrics by Richard M. Sherman and Robert B. Sherman (the Sherman Brothers) and additional music and lyrics by George Stiles and Anthony Drewe, and a script by Julian Fellowes. The musical is based on the similarly titled Mary Poppins children's books by P. L. Travers and the 1964 Disney film, and is a fusion of various elements from the two, including songs from the film.
David Magee
He wrote the screenplay for the Disney musical "Mary Poppins Returns", directed by Rob Marshall, and starring Emily Blunt and Lin-Manuel Miranda, which was released in 2018.