Still, any possible weaker performances are of little importance after you get your hands on the fat booklet with over 500 pages. The booklet offers a short intro about the great composers, a glossary of musical terms, a list of works used in films and dozens of illustrations of several composers.

Overall, at this price, this is a must-have pack for any beginner, and might be useful for the occasion "quick check" of the work of many composers. Do not expect many detail, nor references to all the works of some composers; I often got frustrated with the lack of detail in some cases, but in general, the booklet is very effective for a quick reference.
You will need more titles that offer more complete information, and you won't truly learn to love classical music just by reading it, but it is small and compact.

It really puzzles me why Naxos did not include a full index of composers, a serious omission. To find a particular composer you will have to look for it yourself in over 500 pages. Also, the separation of the text is not so good, making the search even a bit slower. The lack of the index is truly annoying and I am sure it will be corrected in future editions.

Even with a few weaker pieces and the lack of the index, at this price, there isn't much to argue about. This is truly a bargain that you should not miss. I would also recommend the A-Z of Opera, which offers a bigger booklet with over 700 pages, focusing on opera works and mentioning several composers that are absent from the A-Z of Classical. That other booklet has a very complete index, and much clearer text layout and separation, that's the way both booklets should have been designed.

The two sets complement each other very well. Highly recommended.