The Public Theater and producer Scott Rudin are also attached to the projects, and artistic director Oskar Eustis said in a statement, "We will do it whenever Steve tells us to. The movies are two of Buñuel's most brilliant films, and what I adore about them – and what I think Steve and David responded to – are that they are masterpieces of surrealism and masterpieces of political commentary.”
Sondheim's most recent musical Road Show (2008) was also produced by the Public Theater, and Sondheim, 84, has been most in depth with publishing a two-volume collection of his lyrics complete with editorial commentary and memoirs.
Sondheim has not spoken in depth about the projects, but told the New York Times that, "the idea has been with him for many years."
