Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Biassed and no clear criteria for coverage of composers

It is not only the exclusion of composers but the fact that there is no indication of the criteria used for including or excluding them or for the depth of coverage given. There is no way to infer why are ,for example , Don Gillis or the author himself given more than twice the coverage given to Mauro Giuliani, just to mention something that can be found from page 143 to 146. There are plenty of examples like this. There are 8 works by Mr Gilder, and less than a dozen works by George Philippe Teleman, none by Tartini, Giusepe Torelli or Johann Pachelbel...! I really felt disappointed with the recomendation of this book.