Publishing has gone very middlebrow. It's turned its back on legacy of modernism and gone into a humanist mode. When people go through art school they are exposed to the history of the avant-garde, and there's a general understanding that what you're doing as an artist is to a large extent, not just regurgitating that history, but engaging with it. There's this denial of that in the mainstream publishing world.
Making 'Birdsong,' on the one hand you have how prestigious it is and the reputation of the book, which is something that's an extraordinary piece of work. Sebastian Faulkes is a genius. So you feel that responsibility when you're portraying that character that he's imagined and millions of readers have pictured.