This book contains ten walking bass lines to ten of the most common chord progressions from jazz standards. These walking bass lines will give you a good basis for what to play and how to outline the chords to provide a good solid walking bass line for soloists to improvise over. I strongly suggest that you memorize these bass lines and try to substitue different notes here and there to alter the tonal colors. Also, play the given arpeggios to better hear the chord you are playing while being aware of the interval you are playing. Practice these slowly and with chordal accompaniment.