For those of you that are just starting out and like listening to the blues this file is for you. Blues is one of the simpliest forms of music but can be improvised and made more interestting by using altered chords, inversions and more... They call it the 12 Bar Blues because after you play 12 bars you repeat it over and over. There's many different styles of blues from Texas Blues, Delta Blues, Chicago Blues, Jazz Blues and more.. The sky is the limit. Included is the basic form to get you started.