I expected a rigorous and pragmatic analysis, a well thought out structure which reveals an increase in the reasoning and do occur one or more own theses in the book (s) to the author, in short, an analysis that brings something fundamentally new. I had too high expectations.
I learned some interesting ideas and some works I will hasten to read (eg "Let the zloty" Boris Vian, I had never heard), but the book did not contain enough shake-it would be only a little my vision of music. It's hard to reach a main thesis, except perhaps increasing ubiquity of music and revolution modes of "consumption" music following the development of digital technologies, smartphones and Internet - in short, nothing new. The weakness of the argument is made up, on the one hand, by many style effects (many puns, especially interfere in the reasoning, to the point that one wonders if some sentences are not only there for the pun) and secondly, by the examples, sometimes interesting but too many.
Then, the editing is not very neat. There is still not a fault per page, but I have found a number of errors in this brief work: spelling and factual errors (for example, Marie Antoinette is mentioned twice as having lived in the time of Louis XIV: yes, Louis fourteen). Unfortunately, this seems recurring in French editions, in most books I have read recently.
To end on a more positive note, the book remains readable if one puts aside the demands that people like me can have! So I think it will suit people looking entertainment with some interesting ideas, rather than a more scientific approach.