This May come Rock out with the smash hit production School of Rock the next generation. Performed by UYT theatre. 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. School of Rock musical with music by Andrew Lloyd Webber, lyrics by Glenn Slater and a book by Julian Fellowes.