The Beetles

From Muppet Wiki

The Beetles are a group of four musical insects who sing the Sesame Street songs "Letter B," "Thinking of U," "Hey Food" and "There's a Lot of Different Ways to Get to School."

The lead singer was usually performed by Richard Hunt. Sesame Road identifies the other band performers as Christopher Cerf, Paul Jacobs and Jonathan Cerf.

The puppets are made from Lavender and Green Anything Muppets. As a concept, they are a nod to the rock band The Beatles.

Just like the real Beatles, the audience for their performances were often full of wild, screaming fans.