The Imperial March

"The Imperial March"
Single by London Symphony Orchestra
from the album The Empire Strikes Back
Released	April 29, 1980
Format	Long play
Genre	Film soundtrack
Label	RSO Records
Writer(s)	John Williams

"The Imperial March (Darth Vader's Theme)", is a musical theme present in the Star Wars franchise. It was composed by John Williams for the film Star Wars: The Empire Strikes Back. Together with "Yoda's Theme", "The Imperial March" was premiered on April 29, 1980, "three weeks before the opening of the film, on the occasion of John Williams' first concert as official conductor-in-residence of the Boston Pops Orchestra." One of the best known symphonic movie themes, it is an example of a leitmotif, a recurrent theme associated with characters or events in a drama.

"The Imperial March" is sometimes referred to simply as "Darth Vader's Theme." In the movies (except for the original Star Wars), the march is often played when Darth Vader appears. It is also played during Palpatine's arrival on the Death Star in Return of the Jedi, though it does segue into the Emperor's own theme as he appears.

"The Imperial March" is first heard in The Empire Strikes Back in low piccolos as the Galactic Empire sends probe droids across the galaxy in search of Luke Skywalker. Its major opening occurs as Star Destroyers amass and Darth Vader is first presented in the film, 19 minutes into the movie. The theme and related motifs are also incorporated into tracks such as "The Battle of Hoth" and "The Asteroid Field". Return of the Jedi makes similar use of the theme, though its final statement is significantly different, making quiet use of a harp as a redeemed Anakin Skywalker dies in his son's arms.

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Wikipedia