15 Original Walking Bass Guitar lines in tablature and notation for the intermediate to advanced bassist. - 176 bars of music over 15 Bass lines (average Bass line length 11.7 bars) - Audio demonstrations and backing tracks for each Bass line at slow (70bpm), medium (135bpm) and fast (200bpm) speeds with video demonstrations for medium speed (Downloadable). - Each Bass line includes an interval analysis of all of its notes and theory explanations of various approaches to chord changes.