High Quality Content by WIKIPEDIA articles! The Wizard of Oz is a musical with a book by John Kane, music by Harold Arlen and lyrics by E.Y. Harburg. It has additional background music by Herbert Stothart. It is based on the novel The Wonderful Wizard of Oz by L. Frank Baum and the 1939 film version written by Noel Langley, Florence Ryerson, and Edgar Allan Woolf.