School of Rock is a rock musical with music by Andrew Lloyd Webber, lyrics by Glenn Slater and a book by Julian Fellowes. Based on the 2003 film of the same name, written by Mike White, the musical follows Dewey Finn, an out-of-work rock singer and guitarist who pretends to be a substitute teacher at a prestigious prep school. After identifying the musical talent in his students, Dewey forms a band of fifth-graders, in an attempt to win the upcoming Battle of the Bands contest.