(Guitar Educational). Although the term "12-bar" is usually the first form one thinks of when hearing the word "blues," a surprising number of songs make use of another popular form: the 8-bar. This book/CD pack is solely devoted to providing you with all the technical tools necessary for playing 8-bar blues with authority. Includes: a CD with 44 full-band tracks; a history of the 8-bar blues form; instruction on boogie, shuffle, and jazz-blues progressions, including minor keys; rhythm patterns and solos; and much more.