The Corellian Edition was initially a promotional CD packaged with some copies of the Revenge of the Sith soundtrack. However, it was later re-packaged and sold on its own. It contained a selection of music from each of the six Star Wars films. The music was composed, conducted, and produced (with the exceptions of tracks 8 and 9) by John Williams and was performed by the London Symphony Orchestra and London Voices. Tracks 8 and 9 were produced by George Lucas.