Bob,
 
I'm not quite sure what you're asking for.  There are lots of studies of
what happens to films before they get released.  Some of these are general
treatments of aspects of production (say a book on art direction) and some
are studies of the development of particular films (Kael's essay on Citizen
Kane, for example, or Rosenblum's stories about the editing of films he
worked on).
 
But I think the major problem has to do with the differences between the
media.  After all, a sketch for a symphony is still a piece of music, but a
chunk of screenplay or a drawing of a set isn't really a fragment of a film.
 
What significance do music scholars make of the sketches for a work of
music?  Are they primarily a means of deriving the intentions of the
composer?  Or are they a means of understanding the various forces and
influences that affect the final composition?  Or is it something else
entirely?
 
 
___________________________________________________________
James Peterson
University of Notre Dame
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