Lux Aeterna (Mansell)
"Lux Aeterna" (, ; "eternal light") is an orchestral composition by Clint Mansell, the leitmotif of the 2000 film Requiem for a Dream, and the penultimate piece in  the movie's soundtrack.

As of October 2010 Lux Aeterna has sold 188,000 downloads.

In popular culture
The popularity of this piece led to its use in popular culture outside the film, in film and teaser trailers, such as Sunshine and Waking Madison, and multiple remixes and remakes by other producers. It was also used in the 2010 season 2 premiere episode of NCIS: LA and a version of the track was re-orchestrated with a choir and full orchestra for The Lord of the Rings: The Two Towers trailer. It was arranged by Simone Benyacar, Daniel Nielsen, and Veigar Margeirsson. The orchestrated version was used in various trailers and video games. Clint Mansell commented that the piece had "gone on to have a life of its own".

Orchestrated version
The orchestrated version was made available as part of the Requiem for a Tower album release from Corner Stone Cues.

References

Songs written for films
2000 songs
Compositions by Clint Mansell
Requiem for a Dream