Julie Andrews will direct a new musical, The Great American Mousical, based on the children’s book of the same name co-written with her daughter, Emma Walton Hamilton. Goodspeed Musicals will put on a developmental production of the show from November 8.

Andrews directed a version of The Boy Friend for Goodspeed in 2005, but this is her first time overseeing a new show. Zina Goldrich and Marcy Heisler will write the music and lyrics, Hunter Bell the book. Christopher Gattelli (“Godspell”) will do the choreography. Sets and costumes will be designed by Tony Walton, who is Andrews’s ex-husband and the father of her daughter. He also did the illustrations for the book, which came out in 2006.