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.
Elf: The Musical Elf is a musical based on the motion picture of the same name, with a score by Matthew Sklar and Chad Beguelin. The book is adapted by Bob Martin and Thomas Meehan from the 2003 film. The musical ran on Broadway in the Christmas seasons of 2010-11 and 2012–13, and also toured the U.S. in 2012. A new tour launched in 2014.