適当を修正。

ふと、
ガイドブックに書いてあったような、
うすら覚えの記憶でchillout music を捉えていたけど、ほんとはなんなんだろうと思ってウィキペディアにきいてみた。


Chill out music (sometimes also chillout, chill-out, or simply chill) is an umbrella term for several styles of electronic music characterized by their mellow style and mid-tempo beats -- "chill" being derived from a slang injunction to "relax."
Chill out music emerged in the early and mid-1990s in "chill rooms" at dance clubs, where more relaxing music was played to allow dancers a chance to "chill out" from the more emphatic and fast-tempo music played on the main dance floor.
The genres associated with chill-out are mostly ambient, trip-hop, nu jazz, ambient house, ambient trance, New Age and other sub-genres of downtempo―a major branch of electronic music. Sometimes the easy listening sub-genre lounge is considered to belong to the chill-out collection as well. Chill out as a musical genre or descriptive is synonymous with the more recently popularized terms "smooth electronica" and "soft techno" and is a loose genre of music blurring into several other very distinct styles of electronic and lo-fi music.

つまり。
chillとはリラックスの意味で、
1990年頃にダンスクラブの、メインフロアでアップテンポの曲が流れてる中、chill roomと呼ばれる小休止するためのお部屋で流れてた緩やかの音楽のよう。で、色んな音楽が融合してできた音楽みたい。
発祥はヨーロッパ（なんてアバウト）、イビザ、サンフランシスコ、ラテンアメリカあたり。

リラックスするには妙に体を揺らしたくなる音楽だなぁと思ってたけど、
なるほどそういうわけらしい。

すっきり。