From Muppet Wiki

Written by	Ellen Weiss
Illustrator	Joel Schick
Published	1992
Publisher	Grolier
Series	Values to Grow On
ISBN	0717282880

In his old neighborhood, Bean Bunny was a gregarious, noisy child -- but when he and his mother move to the Muppet Kids' neighborhood, he experiences crippling "shyness attacks" that make him cringe away from even the simplest kind word from a stranger. He spends weeks without speaking to another person, just sitting in his room every day after school.

One day in October, Bean is caught in a sudden rainstorm, and he takes refuge in a dark shed. He sings seven songs. Also, Piggy buys a large tub of cottage cheese.