The Klein Four

The Klein Four is an a cappella group of five (despite the name) mathematics students at Northwestern University who produce comical material. They are particularly noted for their song "Finite Simple Group (of Order Two)."

The Klein Four is an a cappella group of five (despite the name) mathematics students at Northwestern University who produce comical material. They are particularly noted for their song "Finite Simple Group (of Order Two)."

The group name is taken from the Klein four-group.