improvi-grabar

Jazz is an improvised form, primarily, and the interesting thing about improvisations is that they become more interesting as you listen to them more times. What seemed like an almost arbitrary collision of events comes to seem very meaningful on relistening. Actually, almost any arbitrary collision of events listened to enough times comes to seem very meaningful. (There's an interesting and useful bit of information for a composer, I can tell you.)

---brian eno

http://music.hyperreal.org/artists/brian_eno/interviews/downbeat79.htm