The name of the jazz quintet depicted in this episode was Liz Marshall and Her Martians. The group was fronted by Jessica Walter's character on bass. In real life, Jessica Walter's father, David, was a world-renowned bassist.
The only episode of the series that takes place outside the United States.
When the helicopter lands at the football stadium, the end zone may look excessive big. In Canadian football, the end zone is 25 yards deep whereas in the US it's only 10 yards deep.