It can be a lot of fun to simply move the power chords around on the neck purely based on what's sounds good to your ear. But you'll get infinitely more use out of the power chords if you can find out how to name them, and this the first of many times that our theory work in the previous chapter is going to pay off.
The note that names this power chord is the one we play with our index finger. The note that names a chord is called the root note. So the root note of an A chord is A. The root note of an E chord is E.
The idea is to use your knowledge of the note names to count your way up the low E-string and find the name of the root note.
I hope you've enjoyed this first introduction to the sound of power chords. Power chords are used in all styles of music that includes guitar, and as we go through the course we'll continue to explore all the cool things you can do with these. In the meantime I encourage you to experiment freely on your own.
- Any Style