In the world of Akvarium books, this one is the holiest of holy texts. Do not buy it unless you are willing to build a shrine in a corner somewhere with incense, prayer wheels, and all the rest of that stuff. You also have to build a little stand for it and it's companion work, B.G.: Not Songs. Cloth cross-stitched bookmarks are optional.
UPDATE December 2002
After several years OOP, B.G. Songs has been republished with the addition of lyrics for all the albums up through this year's Sister Chaos, but minus, regrettably, Boris' "Notes on 16 albums" included in the first edition. Still, Akvarium-ophiles rejoice! B.G. Songs is still the best thing going.