The "blues scale" is a common name for the hexatonic you get from adding a b5 to the minor pentatonic (1-b3-4-b5-5-b7). The idea is to play minor pentatonic with a "spicy note". Other spicy notes are the major 3 and (less often employed) the major 7 and b9. As a bit of fun, let's see what happens when we add two of these to minor pentatonic to produce a seven-note scale that, in theory, ought to have one foot in blues / rock language that everyone who has heard twentieth century pop music wil...
