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

Drill 2a - 4 beats per note:

Drill 2b - 2 beats per note: