<P> RCA Victor next re-packaged the Special Edition set later on in 1997, offering it in slim - line jewel case packaging as an unlimited edition, but without the packaging that the original "black booklet" version offered . </P> <P> In 2004, the Sony Classical Records company purchased the sales rights of the original trilogy's musical scores--primarily because it already had the sales rights of the music from the trilogy of prequels: The Phantom Menace, Attack of the Clones, and Revenge of the Sith . Hence in 2004, the Sony Classical company began manufacturing copies of the film - score CDs that RCA Victor had been making since 1997, including the one for The Empire Strikes Back . This set was made with new cover artwork similar to that of the film's first publication on DVD . Despite the digital re-mastering by Sony Classical, their CD version made and sold since 2004 is essentially the same as the version by RCA Victor . </P> <P> A novelization of the film was released on April 12, 1980, and published by the company Del Rey Books . The novelization was written by Donald F. Glut, and it was based on the screenplay by Lawrence Kasdan, Leigh Brackett, and George Lucas . </P> <P> This novelization was originally published as Star Wars: The Empire Strikes Back . However, the later editions have been renamed Star Wars Episode V: The Empire Strikes Back to conform with the change in the titles of the Star Wars saga . Like the other novelizations of the Star Wars Trilogy, background information is added to explain the happenings of the story beyond that which is depicted on - screen . </P>

Where did they film the empire strikes back