In December 1974, a French consortium led by Jean-Paul Gibon purchased the film rights to Frank Herbert’s epic 1965 science fiction novel Dune and asked Jodorowsky to direct a film version. Agreeing, he planned to cast the surrealist artist Salvador Dali as the Emperor Shaddam Corrino IV, who requested a fee of $100,000 per hour. He also planned to cast Orson Welles as the Baron Vladimir Harkonnen. The music would be composed by Pink Floyd, Magma, Henry Cow and Karlheinz Stockhausen. Frank Herbert travelled to Europe in 1976 to find that $2 million of the $9.5 million budget had already been spent in pre-production, and that Jodorowsky’s script would result in a 14-hour movie (“It was the size of a phonebook”, Herbert later recalled).
infos from wikipedia