François Fromage and his Dancing Cheeses

From Muppet Wiki

François Fromage and his Dancing Cheeses were six tapdancing cheeses who opened the first episode of Muppets Tonight.

Their act came to a sudden ending when all the cheeses started to melt under the hot studio lights. They finally ended up in Rizzo's stomach.

Some members would go on to join The Longhorn Cheddar Cheeses.