Charlie and the Chocolate Factory (musical) inside the factory, giving Wonka an idea. Charlie returns to the decrepit shack he lives in, which he shares with his mother and four bed-ridden grandparents: Grandpa George, Grandma Georgina, Grandpa Joe, and Grandma Josephine. Charlie and Grandpa Joe play a pretend, game recalling how the latter became Wonka's security guard ("Charlie, You and I") before his mother comes home, giving Charlie an old notebook for homework. Charlie daydreams and scribbles a letter to Willy Wonka, suggesting new candies he should consider inventing, before folding it into a paper airplane and tossing it out the window into the night ("A
Willy Wonka & the Chocolate Factory to buy the rights to the book and finance the picture for the purpose of promoting a new Quaker Oats "Wonka Bar". David L. Wolper and Roald Dahl agreed that the film would be a children's musical, and that Dahl himself would write the screenplay. However, Wolper changed the title to "Willy Wonka and the Chocolate Factory". Screenwriter David Seltzer conceived a gimmick exclusively for the film that had Wonka quoting numerous literary sources, such as Arthur O'Shaughnessy's "Ode", Oscar Wilde's "The Importance of Being Earnest", Samuel Taylor Coleridge's "The Rime of the Ancient Mariner" and William Shakespeare's "The Merchant