Watch the Long Walk Down Blues Alley online guitar lesson by Fareed Haque from 30 Beginner Jazz Licks You MUST Know
This lick is really two licks put together, and it ends as many licks do, with the minor 3rd sliding up to the major third. The sadness of the minor third gives way to the uplifting major third. When you play that first double stop, notice that it's not that far away from Chuck Berry's "Johnny B. Goode".
In truth, the difference between western swing, country, bluegrass, jazz, and rock 'n' roll is not in the notes but in the feel.
The more laid back, the more jazzy, the more straight the more country…but the notes are pretty much the same!