Level 2, Complete Blues Harmonica Lesson Series. The companion audio contains nine new jam tracks. These songs range from slow to very fast, and they demonstrate common deviations from the standard 12 bar blues, including one in a minor key. In the instructional portion of this book/audio set, you'll study phrasing and learn how to build solos and instrumental songs as the 12 bar blues structure repeats during a song. Includes access to online audio.