Seussical is a musical by Lynn Ahrens and Stephen Flaherty based on the stories of Dr. Seuss (mainly "Horton Hears a Who!", "Horton Hatches the Egg" and "Miss Gertrude McFuzz") that debuted on Broadway in 2000. The play's story is a complex amalgamation of many of Seuss's most famous books. After a Broadway run, the production spawned two US national tours and a UK tour. It has become a beloved classic for schools, communities, and regional theatres.