Input (grade 11): Thus, a musical such as Fiddler on the Roof has a composer (Jerry Bock), a lyricist (Sheldon Harnick), and the writer of the "book" (Joseph Stein).
Output (grade 8): Sometimes these two are by different authors, e.g. the musical Fiddler on the Roof has a composer (Jerry Bock), a lyricist (Sheldon Harnick), and the writer of the "book" (Joseph Stein).