I just finished the book and while I understand some of the criticisms (yes, he definitely needed a more aggressive editor), I found it a very good read and quite interesting. And honest. Jefferson Airplane has always seemed to be a world that lived on the edge, suffused with conflict, whether under the surface or overt and I've always wondered what it would have been like to be in that scene. It wasn't all that attractive, to be honest. The fact that Jorma could be so gracious to Grace, given how much she sabotaged things, is pretty amazing.
I think the book is about atonement, not really music. Here's a man who spent his 20s until well into his 50s struggling with issues in an environment that did not require any reckoning. Many people didn't make it out alive. The big story isn't how he was in Jefferson Airplane or Tuna, the big story is how a man was lucky enough to live long enough to atone and to express gratitude for having the chance and support to do so. Given my past, which I won't go into and wasn't quite so dramatic, it resonated pretty deeply.
