part 4 of "The 1-2-3-4 Guitar System SE edition". (the SE edition contains metal/dark artwork). This book explores all sorts of 4 finger exercises including, 7th chords, 4 finger scales, connecting patterns, excerpts from Stravinsky, Saint Saens, Brahms, J.S.Bach's entire Double Violin Concerto score for 4 Guitars in TAB, plus much more. A unique exploration of guitar technique, hand motion, and music theory formulated for fretboard mastery