<P> The first significant changes were made in 1997 with the release of a Special Edition remaster in commemoration of the franchise's twentieth anniversary . These changes were intended to modernize the films and create consistency with the forthcoming prequel trilogy . Additional significant changes were made when the original trilogy was released on DVD in 2004, and such changes tried to further create consistency with the prequel trilogy after the release of The Phantom Menace and Attack of the Clones and in anticipation of Revenge of the Sith . Further changes were made to the films for their Blu - ray release in 2011 . </P> <P> Many changes met criticism and outrage from fans and critics, and many believed that Lucas degraded the original films with the additions . Most controversial is the decision to have Greedo shoot before Han Solo does, which sparked wide usage of the phrase "Han shot first". Other controversial changes include replacing the "Lapti Nek" performance by a puppet Sy Snootles with a longer "Jedi Rocks" performance by a CGI Snootles, having Darth Vader yell "No!" as he kills the Emperor, and replacing Sebastian Shaw as the Force ghost of Anakin Skywalker with Hayden Christensen, who was cast to play Anakin in the prequel films . It was also felt that subsequent changes stripped the Star Wars film of the qualities for which it won Academy Awards . Despite the negative response to many significant changes, critics also felt that many smaller changes were improvements, innocuous, or understandable . </P> <P> The 1977 release of Star Wars was selected for preservation in the National Film Registry of the United States Library of Congress in 1989 . In 2014, the National Film Registry still did not have a copy of the 1977 film; George Lucas refused to submit a copy, stating that he no longer authorized the release of the theatrical version . Lucasfilm offered the altered 1997 Special Edition release, but the Registry refused it as the first published version must be accepted . The Library of Congress, however, received a 35mm print of the film, without the A New Hope subtitle and subsequent alterations, in 1978 as part of the film's copyright deposit . </P> <Ul> <Li> 1977: Star Wars was theatrically released . </Li> <Li> 1980: The Empire Strikes Back was theatrically released . A 70mm print of the film differed from the more widely distributed 35mm print in takes of dialogue, visual and sound effects, shot choices, and transitions between shots . None of these changes appeared in later releases, with exception of one dialogue change . </Li> <Li> 1983: Return of the Jedi was theatrically released . </Li> <Li> 1985: Star Wars, now subtitled A New Hope, was re-released on VHS and in 1989 released on LaserDisc with an improved audio mix . The LaserDisc release, and the CED videodisc also released, sped the film up by three percent to fit the film onto a single disc . Some releases additionally had minor aspect ratio changes . </Li> <Li> 1993: The original trilogy was released on LaserDisc as "The Definitive Collection". With exception of a THX audio mix, scratch and dirt removal, and color balance changes, it matched the original theatrical releases . </Li> <Li> 1995: The original trilogy was offered on VHS in a "last chance to own the original" campaign before the films were taken off the market in January 1996 and an altered re-release released in 1997 . </Li> <Li> 1997: The Special Edition of the original trilogy was released theatrically and to home media for the twentieth anniversary of Star Wars . This release featured the first significant changes, intended to modernize the films and create consistency with the forthcoming prequel trilogy . The original negatives were also digitally restored . </Li> <Li> 1999: Episode I--The Phantom Menace was theatrically released . </Li> <Li> 2002: Episode II--Attack of the Clones was theatrically released . </Li> <Li> 2004: The original trilogy was released on DVD . Further significant alterations were made . </Li> <Li> 2005: Episode III--Revenge of the Sith was theatrically released . </Li> <Li> 2006: Another version of 2004 DVD edition was released . An unaltered version of the trilogy was included on bonus discs; it was same as the 1993 LaserDisc release and was of inferior quality to the restored version . </Li> <Li> 2011: The original and prequel films were released for Blu - ray . Alterations were made to all films . </Li> <Li> 2015: The original and prequel films were released digitally to streaming services . It is identical to the Blu - ray release, except for changes to the opening logos and fanfares . </Li> </Ul>

Why did they change the music at the end of return of the jedi