As a big Björk fan, this book was a no-brainer. I enjoyed the descriptions and explanations of Björk's canon, and there was a lot of trivia I was unaware of. The book also covers in some depth her collaborations and dabblings - although bizarrely, it misses (unless I haven't seen it mentioned) her involvement in Plaid's 'Not For Threes' album.
The book does exactly what you would expect, and is a must for all Björk fans. Writing abjectively though, I feel four stars is fair because the book is not exactly designed to appeal to anyone who is indifferent or unkeen on Ms. Guðmundsdóttir. It can be a little biased in places as well.
Covering everything from pre-Sugarcubes to Vespertine (the book is a 2002 publication), and everything inbetween, this is a great read for those who have followed Björk and have loved her different, varied and interesting career.