Ligeti: Atmosphères

Ligeti: Atmosphères
リゲティ:　「アトモスフェール」（Japanese）

This piece is very famous, since it was used in the "2001: A Space Odyssey." Even people who don't like 21th classical music also know this piece.
The most remarkable feature of the piece is the sound of "tone clusters."
I think that Ligeti made Atmosphères more attractive, by using tone clusters.