Fill in the Blanks 242-testOnline version 242-test by Farhad Key 1 libretto indispensable laid arsenal premieres getting reviews Another souvenir performers Therefore painstaking during Most important of all is the fact that for each new ballet - pantomime created at the Paris Opera the July Monarchy , a new score was produced . The reason for this is simple : these ballet - pantomimes told stories ? elaborate ones ? and music was considered an tool in them across to the audience . , music had to be newly created to fit each story . Music tailor - made for each new ballet - pantomime , however , was only one weapon in the Opera's explanatory . was the ballet - pantomime , a printed booklet of fifteen to forty pages in length , which was sold in the Opera's lobby ( like the opera libretto ) , and which out the plot in detail , scene by scene . Critics also took it upon themselves to recount the plots ( of both ballet - pantomimes and operas ) in their of . So did the publishers of albums , which also featured pictures of famous and of scenes from favorite ballet - pantomimes and operas .