I've always had a soft spot of Junior's special brand of funky blues. I'm actually not sure this particular song qualifies as blues per se. It's really funk, but most of Junior's records had at least one foot firmly planted in the blues and many times his other foot was tapping (on the one) in funk.
Though he made nods to his birthplace of Memphis, his sound was all tough & rough Chicago electric blues. He was less like his soulful cousin (fellow harp player) Little Junior Parker, and more rugged like a Little Walter for the funk era.
Today Junior Wells would have turned 80 years old. In his honor, bust a funky blues groove to this Record of the Day (from the Delmark LP Blues on Tap).