As one of the special features on the 2002 2 disc 20th anniversary DVD and Blu-ray versions of the film, a version of the end titles is presented with Carlos' score intact.

This was done after the soundtrack album was already completed, so the soundtrack album features Carlos' complete piece for the end titles. Shortly before the release of Tron, Walt Disney Productions replaced the second part of the ending title's score with the song 'Only Solutions'.

Two additional musical tracks were provided by the band Journey after British band Supertramp pulled out of the project. The non-electronic pieces were performed by the London Philharmonic Orchestra (hired at the insistence of Disney, which was concerned that Carlos might not be able to complete her score on time). The music, which was the first collaboration between Carlos and her partner Annemarie Franklin, featured a mix of an analog Moog synthesizer and a Crumar General Development System (GDS) digital synthesizer. The soundtrack for TRON was written by pioneer electronic musician Wendy Carlos, who is best known for her album Switched-On Bach and for the soundtracks to many films, including A Clockwork Orange and The Shining. The album was released on July 9, 1982, the day of release of the film. Tron: Original Motion Picture Soundtrack is the soundtrack album for the 1982 film of the same name, composed by Wendy Carlos with two additional musical tracks which were provided by the band Journey. The soundtrack was certified gold in the UK soon after release and debuted at #10 on the Billboard 200 Albums chart, making it the band’s first top 10 album in the U.S.The Shining (Score Selections from the Original Motion Picture Soundtrack)

Recorded with an 85-piece orchestra at London’s AIR Studios, Daft Punk cited Wendy Carlos as inspiration alongside Max Steiner, Bernard Herrmann, John Carpenter, Vangelis and Maurice Jarre. Universally acclaimed, the TRON: Legacy soundtrack was considered a musical departure but in hindsight contained aural hallmarks that foreshadowed Daft Punk’s later recorded work using live instruments to create classical soundscapes.

Daft Punk ‎– TRON: Legacy (Original Motion Picture Soundtrack)Released on December 3rd 2010, the TRON: Legacy Original Motion Picture Soundtrack marked Daft Punk’s film music debut and remains the only score composed by them to date.

Tron legacy soundtrack