Play effective modal walking lines on m7, V7, and Major I chords.
Add chromaticism for harmonic flavor.
Use triadic material at will for more range.
Create rhythmic interest without overpowering the groove.
Train the ear by singing all bass lines played.
This course material begins at an easier level but becomes intermediate/advanced within a few lessons. There is much use of rhythm, range, and modal harmonic flavor to create challenges for more advanced players.