Wicked and its namesake musical and book have all taken major influence from 1939's The Wizard of Oz movie and the 1900 book ...

“The Wizard of Oz officially premiered in Hollywood on August 15, 1939, at Grauman’s Chinese Theatre,” Jay said. “The film ...

Jack Haley as the Tin Man, Bert Lahr as the Cowardly Lion, Judy Garland as Dorothy, Ray Bolger as the Scarecrow and Frank Morgan as the Doorman to the Emerald City in 'The Wizard of Oz', 1939.

There are many of 'Wizard of Oz' easter eggs found in 'Wicked's' music. The origin story is a hit Broadway play adapted into a movie musical.