Original Motion Picture Soundtrack (Score OST) from the movie Back to the Future.
Music composed by Alan Silvestri.

Back to the Future Soundtrack
Back to the Future II Score
Back to the Future III Score

Source: Back to the Future Movie
Style: Original Motion Picture Score – Original Score Reissue
Music by Alan Silvestri
Label: Intrada
Released: 1985

In November 2009, Intrada released an official album containing Silvestri’s complete score. The first disc contained the complete orchestral score as recorded for the finished film, along with two source cues that Silvestri wrote. The second disc consisted of alternate approaches that Silvestri took with a large portion of the score, with a darker, more serious tone. None of the songs from the first album are included in this score-only album, and for moments in the film where Silvestri’s score was shortened (i.e. the final moments of “Einstein Disintegrated” and “Peabody Barn; Marty Ditches DeLorean”), replaced with source music (“Town Square”) or unused (“Logo”), the full score cue is presented as originally recorded.