General Grievous's theme

"An almost joyous fanfare-like theme opens this track with some choral backing near the 1 minute mark."

- SWFan.com

"General Grievous' Theme" is a piece of music written by John Williams for the soundtrack of Star Wars Episode III: Revenge of the Sith and its respective score. It represents the character Grievous and was performed by the London Symphony Orchestra and the London Voices, the choir used for the previous two prequels, in 2005. The theme appears twice in Revenge of the Sith and its soundtrack. The theme prominently features a number of strings, French horns playing the melody, and the London Voices.

Conception and development
John Williams was contracted to write the score for Star Wars Episode III: Revenge of the Sith, as he had done for all five previous Star Wars films,    and did so in 2005. He used the London Symphony Orchestra and London Voices to perform the score. Both are used in "General Grievous' Theme," the main theme used to identify with the character General Grievous. The soundtrack was released on May 3, 2005, and again on May 24 as an mp3 download.

Summary
The theme appears twice in the Revenge of the Sith soundtrack. The track "Grievous Speaks to Lord Sidious" has the purest, most direct, and complex form of the theme. In this track, the theme starts off with a rapid string part. Trumpets then come in, followed by French horns playing the main melody, which is broken into three sections by short rests. The London Voices come in next, singing between the French horn phrases. The theme ends suddenly as the chorus and orchestra drop off all at once. The theme appears in the track "Star Wars and The Revenge of the Sith." This version is simply a tuba soli and is very brief.

In the movies
The theme is exclusively used in Revenge of the Sith. It appears in the scene aboard the Invisible Hand, General Grievous' flagship, when Grievous is seen for the first time in the movie. It appears a second time in the scene showing Grievous arriving on the sinkhole planet Utapau in a Sheathipede-class transport shuttle. This scene contains the most direct appearance of the theme. It is heard a third time during the lightsaber duel between Jedi Master Obi-Wan Kenobi and Grievous in the hangar in Pau City, the capital city of Utapau, which results in Grievous' death. The theme is also used in one of the chapter menus on the DVD.

In the soundtracks
The theme is featured for the first time four minutes and forty-six seconds into the track "Star Wars and the Revenge of the Sith," the first track on the Revenge of the Sith soundtrack. It is then heard again at the beginning of "Grievous Speaks to Lord Sidious," the soundtrack's thirteenth track.