The expressiveness of the blues comes from the melodic inflections added to particularnotes. When we listen to various vocal or guitar renditions of the blues, these inflectionsare easily recognizable; they stand out because of their emotional charge and slightly “outof tune” sound. 1 The so-called blues scale approximates the sound of these pitchinflections by altering ^3, ^5, and ^7 of the major scale. Figure 9.3 illustrates the content ofthe blues scale and its derivation from the major scale.The blues scale is a six-note collection with the “blue” notes on ≤3, ≤5, and ≤7. Althoughthe presence of ≤7th suggests a chord–scale relationship with the dominant 7th chord,the use of the blues scale is not limited to this chord only. In the context of the bluesscale, the pitches ≤3 and ≤5 constitute expressive embellishments not bound by anyparticular harmonic function or chord type. The blues scale, then, is an androgynous