Adding Hammer-Ons to an Alternating Bass Melody
There is a lot of melody inherent in an alternating bass, and it doesn’t take much to bring that melody to the forefront. Example 1 shows a melodic alternating bass line for a I–IV–V progression in G. The three basic fingerings being used are shown in the chord diagrams.
It’s a very basic alternating bass pattern, but you can almost hear a melody in there. By adding a couple of hammer-ons, you can make the melody clearer (Example 2).
Excerpted from Acoustic Guitar Lead and Melody Basics