A master catalogue of major, minor, pentatonic, and blues scales in the keys of C, D, E, F, G, A and B. In addition, the Mixolydian, Dorian, Phrygian, and Locrian modes are presented in each key. A fingerboard diagram appears at the top of each page. The scale or mode is shown in numerous positions on the fingerboard, and a riff is shown in notation and tablature utilizing each scale or mode. This comprehensive text also includes charts showing the history of scales and modes, formulas, practice tips, key charts, circle of fifths, and much more.