Wicked is a musical with music and lyrics by Stephen Schwartz and a book by Winnie Holzman. It is a loose adaptation of the 1995 Gregory Maguire novel Wicked: The Life and Times of the Wicked Witch of the West, which is in turn based on L. Frank Baum's 1900 novel The Wonderful Wizard of Oz and its 1939 film adaptation. The musical is told from the perspective of two witches, Elphaba and Galinda, b... Wikipedia