Watch the Common Country Blues Chords online guitar lesson by John Hatcher from Fingerstyle Blues Roots
Nothing quite defines the blues sound like dominant 7th chords, or 7th chords for short. This particular chord quality adds a little mystery to the standard cowboy chords.
The cool thing is that there are only five 7th chord shapes that you need to know. In this lesson, we'll cover the shapes and then we'll really get cooking by taking a look at the moveable shapes derived from them.