Watch the Something Old Something New online guitar lesson by Corey Congilio from 50 Blues Rhythms You MUST Know
This is a slow-ish blues rhythm. It's not the slowest blues we'll play but, it's a good example to show off an interesting 7th chord inversion.
The IV and V chords in this example are using an inversion that’s a bit of a stretch but offers a cool sound. I use this chord a fair bit. The lowest note in this inversion is the 3rd of the chord which always sits nicely if the bass player is playing the root.
The I chord is a familiar friend.
I'm sure you'll get the vibe of this one.