Watch the Learning and Practicing Harmonizing Scales online guitar lesson by Frank Vignola from Modern Method for Guitar
In this segment we harmonize the major scale with 4 notes the same way we did with triads. We play the harmonized scale finding breaking points to move vertically from a lower set of strings to the higher strings.
1. Play the harmonized C major scale on a lower set of strings. When you get to the last chord of the scale, move vertically and play it on the next set of strings. You can switch from strings 6-5-4-3 to -5-4-3-2 and from strings 5-4-3-2 to 4-3-2-1.
2. Next, switch strings on the last 2 chords of the scale.
3. Next, switch strings on the last 3 chords of the scale, etc.
4. Remember to do this exercise in all 12 keys, spending a little time each day.