This PDF book contains sheet music for 19 walking bass lines (one - three bars each) covering a variety of different chord progressions (major 7, minor II, V, I, dominant 7...), one example of how to apply walking bass phrases/vocabulary to a jazz standard, and a tutorial on how to transpose bass lines to different keys. All contents are accompanied by video tutorials in the Vocab Hub series (out on YouTube). This book is designed to help build your walking bass vocabulary so that you can easily implement jazz phrasing when improvising. Or, if you're new to walking bass, it provides a good example of how professional lines are constructed.