The Blues Scale For Guitar by Andrew D. Gordon is an invaluable guide to the blues scale, explaining how it is used to improvise in many styles of contemporary music. Both the Blues scale and relative minor Blues scale are explained in detail, and how they are used either separately or together in the patterns for each style (the relative minor Blues scale is generally not used in minor keys) is discussed.

Each of the 20 grooves in this book contains over 150 patterns in total, using notes s...