Charlie and the Chocolate Factory (musical) have ("If Your Mother Were Here") later Charlie pens a letter about what he'd invented for his family to Wonka, folds it into a paper airplane and sends it flying out into the night ("A Letter from Charlie Bucket"). The next morning, Mrs. Bucket returns home from her night job and explains to the rest of the family that Willy Wonka is holding a competition where five lucky contestants must buy Wonka Bars to find a Golden Ticket to his factory and a lifetime's supply of candy. Charlie is desperate to win one, but he has no money. On their
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