Joey's line to his pianist, "You haven't been the same since you left the White House," is a reference to former President Harry Truman, who was famous for playing the piano and occasionally performed on variety and talk shows after he left office.
This was the first of two episodes in which Bishop played two roles, with one being confused for the other. The other was "Double Time," which appeared in the following season.
One of a handful of first-season episodes that have been colorized.