I am going to give this book only three stars because I felt quite bored by the author's relentless self-promotion. I find arrogance difficult to take and, having read a whole stack of Dylan books where the authors are rather more interested in Bob than themselves, I find this one rather irritating. The issue of scholarship is significant: Heylin has spent a lot of time in the Colombia vaults and probably reads their system better than most, but his arrangement of the songs chronologically is very much a matter of opinion, informed as that opinion might be. That, effectively, is his one trick, and it is insufficient to carry this book since his critical skills are not of the same order. It becomes tedious that Heylin ends each section with a little twist that he presumably finds witty; I don't, at least after a few of them. He also seems to have much more respect for himself than for Dylan and, with an ego the size of his own should be more forgiving of both Bob's ego AND his libido. I also am much irritated by Heylin's lack of respect for other authors, I have met Michael Gray and find him an interesting, insightful and pleasant man. I am SURE that Gray would not speak of Heylin in the way that Heylin does of Gray and everyone else. In my opinion, the best thing to inform anyone wanting to find out more about Dylan is to read another book, so long as it is intelligently written. Heylin doesn't agree with this, thinking most other writers inferior to himself, and it is to his detriment. In a few word, I will state with certainty; Song and Dance Man 3 is MUCH better than this book, though much more demanding intellectually to read. I would like to test Heylin's knowledge of American roots music; I suspect it would NOT be great, and certainly would not match Gray's.