On AllMusic, William Ruhlmann said, "Signing to the Chicago-based independent blues label Alligator Records, [Winter] staged his own comeback with 1984's Guitar Slinger, and its follow-up, Serious Business, is in the same vein. That vein is straight Chicago-style electric blues in the manner of Muddy Waters.... He was already developing from his old mile-a-minute playing style into more of an expressive bluesman in the late '70s. Here, the transition is complete.... Maybe Johnny Winter isn't trying to be a superstar anymore, but his striving to be a consummate bluesman is wholly successful."[3]
Track listing
"Master Mechanic" (A.D. Prestage, Joe Shamwell, Walter Godbold) – 3:37
"Sound the Bell" (Clarence Garlow, Eddie Shuler) – 3:23