Having developed two of the most prolific and respected guitar programs in the world (Berklee School of Music in the 1960s and University of North Texas in the 1980s) Jack Petersen is arguably the most influential academic jazzguitar teacher of our time. Mick Goodrick and John Abercrombie to drop a couple big jazz guitar names and countless other great players all went through the 'School of Jack Petersen.' This book presents Jack's revolutionarysystematic chord voicing techniques for guitar. This easy to use system is a must for anyone serious about learning and understanding chords on guitar. Concepts of root position chords inversions and a number of other voicingtricks are covered with standard notation tab and chord diagrams.