Bergonzi is a brilliantly systematic jazz educator. He is able to break down musical concepts into easily-digestible, simply formats that a musician can explore endlessly and adapt to his personal style. In this first installment, Bergonzi gives a series of methods for constructing melodies based on groupings of 4-notes. The most basic material is at the beginning and the material gradually progresses into more "outside" areas and finally concludes with an overview of how you can endlessly apply the information. While the exercises are somewhat mechanical, this material truly can be used to construct beautiful, melodic lines over any chord progression. My problem with this book (and with the other parts of the series that I own) is that it is simply full of useless paper. Most of the books are, in fact, filled simply with transposed chord progressions for different tunes. I actually condensed all of the information in this book onto one page. But unfortunately you cannot sell books with one page of information. So, if you can get this book from the library or from a friend I highly recommend you do so. But if not, I do recommend getting the book as this is essential information for modern jazz musicians.
I've been playing over 30 years and have looked over hundred and hundreds of method books. The way Mr. Bergonzi breaks things down into smaller fragments allows one to Immediately have more melodic control and exactness in one's phrases. It's like the difference between sliding around on an ice patch versus hitting dry road and having full traction. This is THE best method book I have ever read, and the only one that is truly making a positive difference. You will become way more creative by first subjecting your approach to this discipline.
improvising may seem elusive but the key to improvising is imitating from the master to really get the jazz but really getting your own voice is just a few books away. Get the Jerry Bergonzi series and with a bit of knowledge of keyboard harmony(Phil De Greg)you will become "you." His books are the best. With some quality time spend in practice your ears will become like Stevie Wonder, you will gain commmand of your instrument and begin you play what you really want to player. More of all the explain is just easy to understand.