Watch the Sixths online guitar lesson by Robben Ford from Chord Revolution: Foundations
We're going to do a vamp now on the chords for "All Along the Watchtower" as performed by Jimi Hendrix. I'm going to demonstrate the usage of sixths in this particular example. The song is in B minor, but the chords being B minor, A, G, B minor, A, E minor. What we're playing here is the six chord of the key of D, five chord of the key of D, four chord of the key of D, two chord of the key of D. Technically this song is in the key of D. That's your harmonic information, the D major scale. We just happen to be playing this song beginning on the minor six chord. Five chord, four chord, two chord, are the only chords we're using out of the harmonized D major scale. It has a particular sound to it that way. It's still the D major scale, but we're using it in a different way. I'm going to try to demonstrate to you the use of sixths doing this. I have a tendency to be all over the place when I play the guitar, so it's hard to rein myself in. Every now and then I might play something that I didn't mean to play. Here we go. Once again, it's all D major information, harmonized D major scale, all over B minor.