This is THE pinnacle of all scales in most songs in blues, hard rock, and heavy metal. What key do you say an AC/DC song is in? Or in most songs that use power chords? The pentatonic scale has been used in some of the most famous guitar riffs from some of the most famous bands. Dan will cover all five patterns of the minor pentatonic scale and disect famous riffs to help inspire your respect for memorizing this scale.