<P> Requiem for a Dream is the soundtrack album from the 2000 film Requiem for a Dream . It was composed by Clint Mansell and performed by the Kronos Quartet . The music for the film is noted for its minimalist qualities in which it uses constant harmonies, a steady pulse, and often variation of musical phrases to drive a point . The soundtrack is best known for the song "Lux Aeterna", which has appeared also in one trailer for The Lord of the Rings: The Two Towers, rearranged and re-orchestrated . </P> <P> With the success of the film also came a successful soundtrack . Composer of the soundtrack Clint Mansell has worked very closely with Darren Aronofsky throughout his movie career . Mansell also has worked on Aronofsky's first film π . Both Pi and Requiem for a Dream are noted for their off notes and range of tenebrous emotions . In the opening credits before the title of the movie appears we can hear the quartet tuning their instruments, before hearing a conductor tap on his music stand to ready the quartet for a performance . The maestro bringing them to attention is Aronofsky . Aronofsky and Mansell both grew up listening to Hiphop which they based a lot of their decision making on that type of music . Mansell took a classic hiphop record and reworked it with the score . Aronofsky saw Requiem as a "monster movie, only when something goes bad you hear the music ." All of the music in the film is influenced by the characters and goes with the drugs in the film . Even though none of the characters actually say the word "Heroin", they still base the music around heroin and cravings . </P> <P> The soundtrack has been widely praised, and in particular the track "Lux Aeterna" (which itself is much used in the film) has subsequently been used in various forms of media . The theme was reorchestrated for The Lord of the Rings: The Two Towers trailer and is known by the name "Requiem for a Tower", presented by "Corner Stone Cues". The theme has been featured in trailers for other films, including Babylon A.D., The Da Vinci Code, I Am Legend, Sunshine, and Valley of Flowers . It also appeared in the video games "Total Miner: Forge" (Xbox Live Indie Game 2011), Assassin's Creed, and in numerous TV spots and advertisements, and at sporting events . Use of the theme has extended to the point where it is interchangeable with the name "Requiem for a Dream ." </P> <P> A remix album, Requiem for a Dream: Remixed, contained new mixes of the music by Paul Oakenfold, Josh Wink, Jagz Kooner, and Delerium, among others . </P>

What is the song in requiem for a dream