In the pursuit of improvisation (jazz or other styles), scales are the palettes utilized for creating melodies. Often, scales are only practiced ascending or descending step-wise. Jazz Scale Workout by Ken Karsh contains eight measure through-composed continuous eighth note exercises (or workouts ) utilizing jazz style melodies based around the Major, Dorian (minor seventh), Mixolydian (Dominant), and Super-Locrian (Altered Dominant) scales the most common scales in the jazz idiom. Four basic guitar fingerings for each scale are provided for the foundation of these exercises. Since these scales are the basis for improvising over the frequently utilized ii-V-I progression, the final workouts found in this publication cover this area. There are two workouts provided for each scale form one with only the scale tones (labeled Diatonic ) and the other with outside chromatic tones resolving to the diatonic scale tones (labeled Chromatic ). The workouts can and should be tried with different fingerings and should be played in all keys for maximum benefit. Jazz Scale Workout provides an enjoyable finger and mental fitness program for guitarists interested in expanding their scale awareness in the jazz idiom.