Very solid; basically all you could want on the subject, short of track-by-track rundowns of every release. Coverage of every major production work, a bewildering array of interviews with notables to back it up, tons of anecdotes, full cooperation and copious verbal input by the man himself. I say "on the subject" meaning "Todd Rundgren as a musician and producer"- this is a professional rather than a personal biography, and Rundgren's personal life is only ever touched on when it affects his work. Which, honestly, is preferable to a sleazy tell-all sort of biography. There's as much or more text in this book covering Todd's production work for other artists as there is covering his own (and Utopia's) albums, which is actually a major strength- Rundgren's production work has such breadth and importance, in addition to being so important to his artistic development in his own work, that this integrated approach to his career strengthens both the parts about his own music, and the parts about his work on others'. Detail does drop off near the end, and the last 20 years of his career up to publication (1991-2010) get a single chapter; but Myers fairly makes the point that the "producer era" of rock music is kind of over, and it'd be less interesting to read about a guy tooling around in Logic to make his own records than it is to read anecdotes about the crucible that big classic works of the 70s and 80s emerged from.
4 stars instead of 5, though, because as solid as this book is, it's not quite revelatory. Todd remains sort of elusive as an artist, despite all the detail crammed into this book. He's clearly brilliant, but perhaps too impatient to stay in any one place long enough to be widely hailed for his work there. The interviewees almost uniformly regard Rundgren as a genius, sometimes verging on the breathless adulation you find in typical music journalism stuff. Recurrent features that emerge in this account of his production work are his skill at vocal arrangement in particular, and his frequently unsatisfactory mixing work (probably resulting from his impatience with mixing and his preference to mix things very trebly so they sound good on the radio). It's equally clear, though, that he can be aloof, sarcastic, socially inept, and can occasionally come across as arrogant. He's honest and humble about the practicalities of his own work, but cagey about how much you can actually learn about him from his music.
This book's failure to pin Todd down isn't really a knock on it, I think, so much as a testament to Rundgren's elusiveness and difficulty as an artist. Very possibly, the definitive book on his life and work will never be written, and maybe can never be written; and the best way to know the man and his work will just be by listening to his music. If that's the case, though, this book will remain as an indispensable companion to his oeuvre.