1. Choose a vertical area to practice.
2. Locate A, B, C, D, E, F, and G in that area, using the diagram below.
3. Play them a few times to warm up.
4. Practice using drill 4a.
5. Practice using drill 4b.
6. Improvise with the 7 natural notes in the area you practiced, using the "Backing tracks for Improvisation" section.
7. Repeat for other areas.

Drill 4a:

Drill 4b: