Question: who sings i'm not that girl in wicked
Answer: `` 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 .