Godel Escher Bach

brain-smushing book; widely referred to as GEB ISBN:0-465-02656-7, by Douglas Hofstadter

My print copy is the 1979 Vintage Books edition ($8.95), but I can't remember when/where I bought it.

http://slashdot.org/books/99/04/23/147248.shtml

http://www.geocities.com/ResearchTriangle/6100/geb.html

http://www.forum2.org/tal/books/geb.html

http://www.d.kth.se/~d90-mst/geb/

http://www.wikipedia.org/wiki/G%F6del,_Escher,_Bach

people in the title: Kurt Godel, M C Escher, and J S Bach

in particular notes JS Bach's Art Of The Fugue

Appears in The Psychopath Test.