John Williams and The Boston Pops Orchestra - The Imperial March (Darth Vader's Theme)

"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 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 used as a leitmotif throughout the Star Wars franchise.

"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 Imperial-class 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.

"The Imperial March" appears on a few occasions in the prequel trilogy, most often used to foreshadow Anakin Skywalker's future as Darth Vader. An innocent theme for the nine-year-old Anakin in The Phantom Menace is thematically based on "The Imperial March". "The Imperial March" is also heard towards the end, as Yoda acknowledges Anakin as Obi-Wan's apprentice in saying "The Chosen One, the boy may be. Nevertheless, grave danger I fear in his training". It is also heard softly at the end of the final credit roll, where it fades into the character's signature breathing, showing that the rest of the prequel trilogy will reveal how Anakin became Darth Vader. In the second prequel, Attack of the Clones, "The Imperial March" is sometimes played subtly when an event foreshadows Anakin's future: It is first played when Yoda senses Anakin slaughtering a tribe of Tusken Raiders to avenge his mother's death and later with more force when Anakin tells Padmé Amidala what he did. It is played most prominently and recognizably during the final sequence when clone troopers assemble and depart Coruscant, foreshadowing that they will become the Imperial stormtroopers. Although "Across the Stars" is featured most prominently in the film's end credits, several notes from "The Imperial March" are heard beneath it near the end.

In Revenge of the Sith "The Imperial March" is first played when Anakin rebukes the Jedi Council for denying him the rank of Jedi Master, although appointing him to the Council. The track can also be heard when Anakin tells Mace Windu about Darth Sidious' true identity. It is later played when Anakin is dubbed as the Sith Darth Vader, shortly after the death of Mace Windu. "The Imperial March" is quoted when clone troopers find dead Wookiees on Kashyyyk and when Padmé confronts Anakin on Mustafar. A few notes of the "March" are played when Vader arrives on Mustafar to kill the Separatists. The piece is played more clearly during the "Battle of the Heroes" scene between Obi-Wan and Darth Vader at the movie's climax and in the simultaneous battle between Yoda and Sidious. It is also played when Darth Vader receives his armor and when he looks up at the first Death Star.