In this video
So far we have learned the E, A and D major chords. A lot of Rock and Blues music tends to play the Power chord version of these chords to sound heavier and darker.
The upshot of this is the open power chords can be played with 1 finger, so they are really easy to play!! So lets take a look.
Notice that the root note (The lowest note of the chord) is the same compared to the standard major chord. But when played, these chords sound darker. When played with the strumming patterns at this level, this can give the driving rhythm sound of many rock and blues songs.