In addition, the box also contains a book filled with photographs of each of the principles heard herein, an overview essay by guitar scholar Charles Alexander, old guitar ads, photos of classic guitar models and amps, solo transcriptions and technical analysis, testimonials from guitar legends, and precise discographical data. Clearly, 100 YEARS OF JAZZ GUITAR is the set to get if one is even remotely interested in the history and development of guitar over the course of the past century.