by David Liebman
This is another book that is geared towards improvisers who are already well versed in the bebop language. The book primarily focuses on soloing over superimposed chord structures over existing chord changes. There are many ways of doing this (as taught by David), and each technique will have a different sound to it. Each topic is supplemented with lines written by Dave himself. The book also talks about non-tonal chromaticism, practicing ideas, voicings and soloing over them, reharmonization of standard tunes, playing melodies and suggestions for reinterpreting them using various melodic and rhythmic techniques...etc.
Let me just reiterate that this book is extremely advanced, and I wouldn't recommend getting it until you have a few years experience with jazz improvisation. Pat Metheny himself wrote a quote which appears on the back of the book and talks about how once he got it, he practiced with it for about 6 hours straight! For people just starting with improvisation, I would first check out the Jerry Bergonzi books and the Hal Crook books before I went on to this one.