As a huge fan of South American rock, as well as music of all Latin cultures, this book for me is truly indispensable. Maybe if there were any others like it, there would be stiff competition, but as far a I know, there ain't. A friend of mine had a copy which I xeroxed because I could not locate it before I went to Argentina last year. Of course, once in Argentina I encountered books like it, but only written in castellano (Argentine Spanish). I needed it to help guide me through locating high-quality, relevant discs, vinyl and therwise of Rock Nacional, or classic Argentine Rock of the 60's and 70's. it is sad that all of this music is not available here in the U.S., but hey, I'd love to be proven wrong. The rewards are great for any rock fan with an open mind. This book is brilliant in its originality, economy and general opinions on the music by the author, for as a music fan I had to agree with many suggestions he had of must-haves for collectors of this freaky, melodic stuff. Believe me, there's more where the music discussed in this book came from.