"I'm Not that Girl" is a song from the musical Wicked, based on the novel Wicked: The Life and Times of the Wicked Witch of the West by Gregory Maguire, composed by Stephen Schwartz, originally recorded by Idina Menzel (original song) and Kristin Chenoweth (reprise) on November 10, 2003, and released on December 16, 2003. It is a solo sung by the main character of the show, Elphaba Thropp (the future Wicked Witch of the West in The Wonderful Wizard of Oz) in the first act and Glinda in the reprise in the second act.