Rachael Beck has appeared in the Australian version of the musical that has a book by whom?
Singin' in the Rain (musical) Singin' in the Rain is a musical with a book by Betty Comden and Adolph Green, lyrics by Arthur Freed, and music by Nacio Herb Brown.
Starship (musical) Starship is a musical with music and lyrics by Darren Criss, and a book by Matt Lang, Nick Lang, Brian Holden, and Joe Walker.