From the recording Every Groove A Bluesman Needs To Know
John Lee Hooker in A
This drumbeat is similar to Jump Swing in E. Maybe that's why I've heard some players call this a "Boogie". While others call 12 bar swing a boogie. Either way they both have a very cool rolling swing with the snare: and two and, and four and, over and over which gives a very strong back beat. Then the bass pushes the backbeat even harder accenting beat two and four very strongly. This is a huge contributor to rock music. What makes this groove really jump is the guitar work. John Lee Hooker was famous for this. He would play on the 'and' beat, or the up beat, almost leaving out entirely any down beat strums. It doesn't matter if you strum the guitar up or down, what matters is doing it on the up beat. At first it might be best for understanding the idea to strum downbeats down and up beats up. There is also something very haunting and mesmerizing, meditative, even hypnotic about jamming on one chord. I think it was John Lee who said "blues don't need no stinkin' changes". Honestly that goes for any of these grooves if you squeeze every note and play from your heart, people will be moved regardless of the chords you use. Songs like ZZ Top’s La Grange.